What's new

This page explains what changes are introduced on each release of Tella.

Newsletter

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Tella - Latest Versions

Android: Tella 3.4.0 (258) - Released on October 6, 2026

• Improvements to Verification mode:
  • Redesigned the Verification information screen: information is now organized in categories (File, Device, Network, Location and Other), each with a help screen explaining what every field means.
  • Added the option to save verification information as a CSV file inside Tella so it can be attached to reports and connections like any other file.
  • Tella now asks to enable GPS before recording videos and audio (not only before taking photos), and uses network-based location in addition to GPS, so a location can be found faster, especially indoors.
  • Tella no longer keeps waiting for Wi-Fi information when there are no Wi-Fi networks around or Wi-Fi is turned off (for example when offline or in airplane mode): the file is saved as soon as the location is found.
  • Reviewed the verification fields: added a "File created" field, and the Device ID now uses the identifier provided by Android, which stays the same if Tella is reinstalled. See the full list of fields and what they mean.
• Improvements to Connections:
  • Made delete confirmations and server URL error messages consistent across all connections.
• Bug fixes and minor improvements:
  • Fixed a bug where choosing "Share files only" from the file viewer still included the verification information.
  • Fixed verification fields that were empty or showed wrong values, including the file path, the date the file was last modified, and Wi-Fi information missing from the CSV when no cell information was available.
  • Fixed several issues with verification mode prompts and messages, including when recording audio.
  • Text fields (for example when renaming files or creating folders) now get focus automatically and open the keyboard.
  • Removed an unnecessary lock timeout warning when taking a photo to send through Nearby Sharing.
  • Fixed minor UI issues, including the "no internet" message in reports being hidden behind the keyboard and the color of the delete action in the files list.
• Updated translations. Please consider helping us localize Tella.

iOS: Tella 3.3.0 (156) - Released on September 16, 2026

• Improvements to the Tella Camera:
  • Added zoom when taking photos or recording videos.
  • Added automatic flash mode: the flash can now be set to on, off or auto.
• Added the possibility to zoom in on images and videos while previewing them.
• Added support for the Geolocation property in the Uwazi connection.
• Added a warning when users try to delete a file from their Tella vault that is pending submission (in Drafts or Outbox) in one of their connections.
• Loaded volunteer translations from Ukrainian and Arabic.
• Bug fixes and minor improvements:
  • Added a visual indicator (green check) when a file is successfully sent through Nearby Sharing.
  • Fixed a visual bug in the background activity tray on older iPhones.
  • Added a confirmation prompt when users try to go back while waiting to receive files in Nearby Sharing.
• Technical improvements:
  • Raised the minimum supported iOS version to iOS 15, as required by Apple.

Android: Tella FOSS 3.4.0 (258) (based on Android 3.4.0) - Released on October 6, 2026

• Improvements to Verification mode:
  • Redesigned the Verification information screen: information is now organized in categories (File, Device, Network, Location and Other), each with a help screen explaining what every field means.
  • Added the option to save verification information as a CSV file inside Tella so it can be attached to reports and connections like any other file.
  • Tella now asks to enable GPS before recording videos and audio (not only before taking photos), and uses network-based location in addition to GPS, so a location can be found faster, especially indoors.
  • Tella no longer keeps waiting for Wi-Fi information when there are no Wi-Fi networks around or Wi-Fi is turned off (for example when offline or in airplane mode): the file is saved as soon as the location is found.
  • Reviewed the verification fields: added a "File created" field, and the Device ID now uses the identifier provided by Android, which stays the same if Tella is reinstalled. See the full list of fields and what they mean.
• Improvements to Connections:
  • Made delete confirmations and server URL error messages consistent across all connections.
• Bug fixes and minor improvements:
  • Fixed a bug where choosing "Share files only" from the file viewer still included the verification information.
  • Fixed verification fields that were empty or showed wrong values, including the file path, the date the file was last modified, and Wi-Fi information missing from the CSV when no cell information was available.
  • Fixed several issues with verification mode prompts and messages, including when recording audio.
  • Text fields (for example when renaming files or creating folders) now get focus automatically and open the keyboard.
  • Removed an unnecessary lock timeout warning when taking a photo to send through Nearby Sharing.
  • Fixed minor UI issues, including the "no internet" message in reports being hidden behind the keyboard and the color of the delete action in the files list.
• Updated translations. Please consider helping us localize Tella.

A detailed list of features available on each platform is available here.

Previous versions

Android

Android: Tella 3.3.2 (254) - Released on August 27, 2026

• Hotfix: Fixed "Move to folder" when the destination folder is empty, and prevented moving a folder into itself.

Android: Tella 3.3.1 (252) - Released on August 26, 2026

• Hotfix: Fixed a bug that made files stored inside folders also appear at the top level of "All files" after updating, so they looked duplicated.

Android: Tella 3.3.0 (250) - Released on August 21, 2026

• All translation management is now done on Weblate. Please consider contributing by helping us localize Tella.
• Updated the onboarding flow and the advanced configuration options, including camouflage.
• Multiple improvements to the Uwazi connection:
  • Implemented count indicators to show the number of entities in each tab (Drafts, Outbox and Submitted).
  • Reviewed and improved copy and wording.
  • Added the possibility to swipe between tabs.
  • Improved UX to make it more accessible, including updated fonts, colors and sizes.
  • Unified and reused existing components.
  • Added Server URL validation: Tella now shows an error message if the URL is invalid or does not correspond to a valid Uwazi instance.
  • Added a warning when users try to delete a media file from their Tella vault that is pending submission in one of their Uwazi entities.
  • Added confirmation snackbars for destructive actions.
• Bug fixes and minor improvements:
  • Fixed a crash and an incorrect error message ("problem creating folder") that appeared after sending the first report to a Google Drive Connection.

Android: Tella 3.2.0 (248) - Released on July 16, 2026

• Implemented security fixes detected by our most recent security audit
  • Implemented mTLS and enforced certificate pinning for both the sender and receiver in Nearby Sharing. This is a mitigation for man-in-the-middle attacks.
• Bug fixes and minor improvements:
  • Simplified the Nearby Sharing manual connection flow: pre-filled the port field and added automatic dot insertion after each octet while typing the IP address.

Android: Tella 3.1.0 (242) - Released on June 8, 2026

• Replaced camera library and location provider with FOSS options.
• Language support improvements: updated Ukrainian.
• Bug fixes and minor improvements:
  • Fixed an "import and delete original" bug that prevented the original file from being erased from the device in some cases.
  • Fixed a screen security issue during onboarding (some screens were not hidden).
  • Corrected the capitalization of buttons.
  • Fixed the geolocation permission flow and solved a bug that prevented the geolocation flow to continue the first time the location permission was granted.
  • Added an option to hide the Tella Web connection ULR from the Connection's settings.
  • Fixed a bug that didn't properly removed camouflage when changing lock type.

Android: Tella 3.0.0 (237) - Released on May 20, 2026

• Implemented Nearby Sharing: Nearby Sharing lets users securely share files in physical proximity. Nearby Sharing is fully offline, available across platforms and devices, and assures end-to-end encryption.
• Implemented security fixes detected by our most recent security audit (to be published soon!).
• New languages support: Ukrainian.
• Bug fixes and minor improvements:
  • Solved camera problem: the top settings bar was hidden in some devices.
  • Solved crash that prevented Tella unlocks when items of the vault didn't have a preview on non-Google file systems.
  • Fixed crash on delayed navigation callbacks (for fast clicking on attachments).
  • Fixed import from device: Tella now supports any file manager.
  • Made sure that the file is imported to Tella Vault when using the "Import from device" from inside a report (on any connection).

Android: Tella 2.20.2 (232) - Released on April 8, 2026

• Hotfix: Made sure that the confirmation messages for submission and auto-deletion only show when the action has been done.
• Hotfix: Made sure that if users exit the flow for changing Lock in the middle, Tella keeps the old lock. Locks are only changed after the whole flow is completed.
• Hotfix: Fixed concurrency problem for when multiple files are sent to Tella Web. We now make sure that all files are sent to the server, even if we need to split the files in multiple auto-reports.

Android: Tella 2.20.1 (230) - Released on April 1, 2026

• Hotfix: Manual reports (to all connections) are not longer stuck in the Outbox.

Android: Tella 2.20.0 (228) - Released on March 19, 2026

• Improvements to the Tella Web connection to increase resilience against intermittent and slow connectivity:
  • Fixed bug: Auto-reports getting stuck in the Outbox.
  • Improved background submission: Ensures that submissions complete even if the app is in the background.
  • Implemented a retry mechanism to resubmit reports once the connection is restored.
• Updated translations.
• Bug fixes and minor improvements:
  • Add contact info field to feedback form.

Android: Tella 2.19.2 (227) - Released on March 12, 2026

• Hotfix: solved a bug that prevented new connections to Google Drive.

Android: Tella 2.19.1 (226) - Released on March 5, 2026

• Fixed issues in the Uwazi connection:
  • Fixed an error in the URL verification for private Uwazi instances that was preventing users to connect to an Uwazi server.
  • Fixed a bug that caused templates not to be saved in the Submitted tab for submission to public Uwazi servers.
  • Corrected the error message when deleting a submitted entity and unified confirmation screens for deleting an entity.
• Bug fixes and minor improvements:
  • Fixed the "Done" button after changing the app Lock (the button was overlapping with the phone's action button on the bottom right of the screen).
  • Added an optional contact box in the Anonymous feedback method for users that would like to be contacted by us to follow up on their feedback.
  • Improved error messages when importing duplicated videos to Tella.
• New Languages support: Mizo.
• Updated translations: Chinese.

Android: Tella 2.19.0 (225) - Released on February 19, 2026

• Fixed bug on Dropbox connection: some users were getting a "This app is not valid" error while connecting.
• Added added lock-protection guidance for new users (in on-boarding) and while changing lock.
• Added support for any file manager, so that users can import and export files from Tella if they choose not to use Google Files.
• Refactored permissions, prioritizing user's privacy:
  • Sunsetting submissions to a Shared Drive folder for the Google Drive Connection: the amount of permissions that users needed to grant to Google to allow Tella to submit directly to a Shared Drive was too broad, and unacceptable for the Tella users' context.
  • Used more granular permissions on the Google Drive Connection: now Tella only has permissions to view and edit files submitted using Tella (and anything else).
• Maintenance and technical tasks:
  • Finalized technical work to support 16 KB memory page sizes as per Play Store requirement.
  • Bugfixing and finalized pending work for edge-to-edge UI enforcement as per Play Store requirement.
  • Big refactor (including adding product flavors) to be able to merge Tella Android and Tella FOSS codebases into a single one.
• Bug fixes and minor improvements:
  • Fixed bug that was hiding the "+" button in all connection when using Tella in a right-to-left language.
  • Fixed crash and unified code and text for saving files outside of Tella vault, when they cannot be previewed in Tella (docs, txt files, spreadsheets).
  • Fixed bug when importing the same video twice to Tella.
  • Updated Recent Files list after deleting a file (the file was still showing and causing a crash when tapping on it).

Android: Tella 2.18.2 (222) - Released on December 9, 2025

• Hotfix: Used least restrictive permissions for the Google Drive Connection in order to make it verifiable by Google.
• Hotfix: Fixed the feature for exporting a single file out of the Tella encrypted vault (with or without verification information).

Android: Tella 2.18.0 (220) - Released on November 28, 2025

• New language: Chinese.
• Bug fixes:
  • Made Quick Delete button accessible for right-to-left languages.
  • Fixed file information screen layout for long file names.
  • Improved explanations for quick delete and add a default value.
  • Fixed quick delete so it deletes all server connections.
  • Improved the export functionality so it works better for big files (for example: long videos).
  • Fixed errors in layout for Camouflage screen.
• Maintenance and technical tasks:
  • Targeted Android 15 (API level 35) as per Play Store requirement.
  • Started technical work to support 16 KB memory page sizes as per Play Store requirement.
  • Refactored export flow to modern Android Storage Access Framework (SAF) picker and removed legacy storage permission.
  • Updated connection's strings to match Google and Dropbox brand guidelines.

Android: Tella 2.17.0 (211) - Released on August 22, 2025

• New language: Azerbaijani.
• Uwazi connection:
  • Changed algorithm for generated id property, to match the one generated by Uwazi.
  • Updated the submission method to match changes in the Uwazi app to public instances.
• Bug fixes:
  • Fixed crash on import for specific devices.
  • Show error messages for Form download errors for the ODK Connection.
  • Fixed bug with thumbnail placeholders for document files on OKD Connection.
  • Made sure only language names (and not code) are shown in the Language Selection setting.
  • Fixed problem that caused old filename to be seen after successive file renames.
• Maintenance and technical tasks:
  • Finalized work for edge-to-edge UI enforcement.
  • Fixed 2 app crashes: one related to the database and one related the shutter sound.

Android: Tella 2.16.0 (204) - Released on May 26, 2025

• Multiple visual and accessibility improvements:
  • Updated the text of the "edit media" confirmation to make it clear that the edited file is saved as a copy.
  • Resolved a bug where the password cursor appeared in the middle of the input field.
  • The image editing canvas now expands to full screen.
  • Fixed a visual bug when listening to audio whereby the navigation bar overlapped with the audio title.
  • Display the verification mode icon for audio files.
  • Fixed an issue where the permission to save files to the Phone Gallery had to be granted twice.
  • Added space at the bottom of the file list so the "+" button remains accessible even when many files are present.
• Uwazi connection improvements:
  • Added a "success" message after submitting to Uwazi.
  • Fixed a bug that required users to log in again to Uwazi after updating Tella.
  • Display favorite Uwazi templates on the home screen.
  • Fixed a submission issue when connected to multiple Uwazi servers simultaneously.
• ODK connection improvements:
  • Improved error message handling for ODK.
  • Removed auto-focus from all fields.
  • The form update button is now always visible for the ODK connection.
• New language support: Ndau.
• Improved document support:
  • Added thumbnail placeholders for document files.
  • Display all common document types in the Documents folder (e.g., TXT, ODT, DOC, DOCX, XLS, etc.).
• Maintenance and technical tasks:
  • Preparatory work for edge-to-edge UI enforcement.
  • Fixed multiple app crashes.
  • Fixed an issue where updating English-language strings didn't update translations. As a result of this fix, the translated percentage for some languages might decrease, but it will be more accurate.

Android: Tella 2.15.1 (202) - Released on March 25, 2025

• Fixed a bug that caused imports to stop working across the app when the lock timeout was set to 5 minutes.
• Fixed the favorite form shortcut on the home screen.

Android: Tella 2.15.0 (200) - Released on March 5, 2025

• Added the possibility to zoom on images in the Tella vault.
• Added Tsonga and Portuguese (Mozambique) language support.
• Fixed an issue that was preventing the photo and video previews to show at the bottom of the camera.
• Multiple improvements to the ODK Connection:
  • Solved a bug that prevented multiple favorite Forms to be saved.
  • Added the possibility to attach all files from the Tella vault using the "select all" button on the file selection process. This applies to Photos, Audio, Files and Video questions types on ODK and Uwazi connections.
  • Added File question type to the supported questions types.
  • Solved a crash that happened when recording audio directly from within an ODK form.
  • UX improvements to ODK: unify button styles and removed empty spaces.
  • Implemented refresh button.
• Bug fixes and minor improvements:
  • Corrected the button for "Select files from Tella" in all server connections.
  • Fixed a problem that was preventing all reports in the outbox to show.
  • Fixed a layout issue that was causing the grid view to brake after going back from file information.
  • Corrected submission time of reports when uploading to Nextcloud.
  • Solved an issue with the phone's back button from the Microphone screen.
  • Do not allow recording an audio when a name is already taken.
  • Updated the text in the Quick Delete settings to say "Delete files" instead of "Delete vault".

Android: Tella 2.14.0 (196) - Released on January 16, 2025

• Implemented the Nextcloud server connection that allows Tella users to upload the data they collect directly to Nextcloud. Read more here about the connection.
• Added Bengali language support. See language accessibility
• Bug-fixing and minor improvements:
  • Solved issue that prevented Indonesian translation to load properly.
  • Tella now shows an error when a user tries to rename a photo if the new name is already taken.
  • User is redirected to the Outbox tab after pressing "submit later" in all new Connections.
  • Added counter to Draft tab for all server connections.
  • Fixed incorrect confirmation text for deleting a report in the outbox in any of the connections.
  • Added confirmation message after a report is successfully submitted to any connections.

Android: Tella 2.13.1 (191) - Released on November 6, 2024

• Hotfix for the Dropbox connection. Previous build didn't allow connections to Dropbox.

Android: Tella 2.13.0 (190) - Released on November 4, 2024

• Added support for the Dropbox connection that allows Tella users to upload the data they collect directly to their Dropbox account. Read here more about the connection.
• Bug fixes and minor improvements:
  • Fixed a bug where "Save to device" sometimes generated duplicated files.
  • Fixed a bug where users sometimes got stuck in the recorder after recording audio inside a folder.
  • Fixed a bug where users sometimes got stuck in the recorder after going back to the audio library.
  • UI fixes for Tella Web and Google Drive connections.
  • Updated the "About & Help" screen, linking to the Android "Get Started" guide.
  • Updated Quick Delete security settings to cover new Connections (Google drive, Tella Web, Dropbox).
  • Fixed a bug for the Uwazi Connection where entities would be duplicated when uploaded when multiple relationships properties were included in the same template.
  • Solved a crash in the geolocation property for the Uwazi Connection.
  • Solved a crash when sending a file with verification information.
  • Solved some issues related to the opt-in privacy-preserving analytics to ensure that measuring time spent in Tella works properly and that some metric applies to all Connections.

Android: Tella 2.12.0 (188) - Released on October 21, 2024

• Added support for the Google Drive Connection that allows Tella users to upload the data they collect directly to either a personal Google Drive folder or to any organizational Shared Drives they are connected to. Read more about the Google Drive Connection here.
• Added more metrics to our opt-in privacy-preserving analytics to better understand usage patterns of Tella.
• Bug fixes and minor improvements:
  • Fixed issues with the homescreen (sometimes showed up empty or with duplicated elements other times).
  • Implemented count indicators in the Draft, Outbox and Submitted tabs of Reports.
  • Solved a bug that constantly changed the order of the Connections cards on the homescreen, and sometimes disappear completely from the homescreen.
  • Solved an unexpected error when submitting to Uwazi a template had related multi-select fields.
  • Solved a bug that prevented Primary Document to be shared to the Uwazi server.

Android: Tella 2.11.0 (186) - Released on September 18, 2024

• Added new options to edit photos within Tella's encrypted container: Zoom and Flip.
• Bug-fixing and small improvements:
  • Disabled clear-text trafic in the manifest.
  • Added missing field name into Uwazi relationship property selector's header.
  • Disable button for saving a folder or file if its name is blank.
  • Fixed bug that made the sorting of files reverse order.
  • Fixed crash when pressing back from the Uwazi template summary screen before submission.
  • Added tutorial screen for data collection into Tella onboarding tutorial.
  • Show attempts selected on the "Delete after failed unlock" setting screen and fixed UI bug longer languages.
  • Solved visual bug for longer Template names in the Uwazi "Download Template" screen.
  • Solved visual bug on the report status screen for report upload progress.

Android: Tella 2.10.0 (185) - Released on Agust 5, 2024

• Added support for the relationship property type in the Uwazi connection.
• Added Vietnamese language support and updated other languages' translations.
• Added support for privacy preserving analytics (opt-in).
  • Added the "number of successful unlock attempts" metric.
  • More info about how analytics works read here.
• Bug-fixing and small improvements:
  • Fixed the "Contact Us" button, which now redirects to email.
  • The "Cancel" button when deleting files is now working properly.
  • The "Cancel" button for saving files to the device is now working properly.
  • Fixed a crash when recording audio directly from within a Tella Web report.
  • Solved navigation issues:
    • Refactored the Uwazi section and solved crashes on the "Back" button on the 2FA and summary screens.
    • Solved issues with the "Back" button in the Tella onboarding flow.
  • Solved visual issues:
    • Section names are now vertically aligned in the Settings screen.
    • The digit in the Quick Delete countdown is now centered.
  • In vault, the reorder bottom sheet now shows the selected option.
  • Fixed a crash when using the ODK geolocation.
  • The Verification Information CSV file is now properly attached when sharing a file that includes Verification Information.

Android: Tella 2.9.0 (183) - Released on July 15, 2024

• Database Migration from SQLCipher 3 to SQLCipher 4.6.0: This migration enhances the security, performance, and compatibility of our database system.
  • KDF Algorithm: Upgraded from PBKDF2-HMAC-SHA1 with 4,000 iterations to PBKDF2-HMAC-SHA512 with 256,000 iterations.
  • Page Size: Increased from 1024 bytes to 4096 bytes.
  • HMAC Algorithm: Switched from HMAC-SHA1 to HMAC-SHA512.
  • Cipher Algorithm: Continued use of AES-256 in CBC mode with stronger key derivation and HMAC.
  • Salt and IV Generation: Improved randomness and security.
  • Compatibility and Performance: Enhanced performance and compatibility with the latest SQLite versions.
• Added a Backup Mechanism: In case the data migration fails. All the information inside Tella should be correctly migrated, but if you are facing any issues, please contact us.

Android: Tella 2.8.0 (178) - Released on June 21, 2024

• Implemented background encryption so users can continue collecting data, taking photos, videos, and audio, and importing files while the encryption process takes place.
• Added a background activity tray so users can check the progress of file encryption.
• Ahead of major changes in the next release, we added a warning to advise users to back-up sensitive files outside Tella, in case the migration fails and some of the files become non-accessible. See below for more information on the upcoming changes and guidance on how to back-up files.
• The top bar now automatically hides when scrolling a PDF for easier reading.
• Upgraded http protocol (okhttp3 library).

Upcoming changes and guidance to back-up files

The next release of Tella Android will include an update to the library used to save encrypted information encrypted in the database (SQLcipher). While we are doing our best to ensure the update to the new version happens smoothly, there is a small risk that some files are lost in the process. For users who are storing sensitive files in Tella, we strongly suggest to back-up these files to a location outside of Tella. This way, if something happens when updating Tella, those files will not be lost.

To export files outside of Tella and save them on your phone:

1. Go to All files (or any folder where there are files you want to backup)
2. Tap on ☑️ in the top right of the screen to enable "select mode"
3. Tap on ☐ in the top right to select all files, or tap ☐ next to each specific file you wish to export
4. Tap on ⫶ in the top right to open the context menu
5. Tap on Save to device
6. Select the destination folder to save your files. You can read more about sharing data from Tella through other apps here.

If you prefer sharing your files through another app:

1. Go to All files (or any folder where there are files you want to backup)
2. Tap on ☑️ in the top right of the screen to enable "select mode"
3. Tap on ☐ in the top right to select all files, or tap ☐ next to each specific file you wish to export
4. Tap on ⫶ in the top right to open the context menu
5. Tap on Share
6. Select the app you want to use to share your files. We recommend using an encrypted email, Signal or any other tool with robust privacy. You can read more about sharing data from Tella through other apps here.

If you have questions or need additional support, don't hesitate to reach out at contact@tella-app.org

Android: Tella 2.7.1 (175) - Released on May 2, 2024

• Fixed crash when accessing the Audio folder from the Microphone.

Android: Tella 2.7.0 (174) - Released on April 16, 2024

• Added support for a content distribution feature that allow organizations to securely disseminate resources and materials from a Tella Web space to their on-the-ground users directly within Tella's encrypted container. This includes creating PDFs on Tella Web and sharing training material, guides for data collection, or documents. Resources can be accesed offline after download. More information here.
• Technical maintanance tasks:
  • Fixed a bug that caused a crash when using the geolocation service.
  • The navigation within the Tella Web feature has been refactored for better stability and scalability.

Android: Tella 2.6.0 (172) - Released on February 19, 2024

• Added support for PDF files in Tella vault and as attachments on Tella Web's Reports.
• Bugfixes:
  • Editing a file inside a folder now saves the copy in the same location.
  • Fixed crash on back button on the camouflage menu.
  • Streamline the flow for renaming an audio recording.
  • Added alt text on a back button.
  • Upgraded project dependencies. Updated documentation with Android support information.

Android: Tella 2.5.0 (170) - Released on January 10, 2024

• Accessibility Improvements:

  • Added new settings to enable/disable text justification and adjust line spacing within the app.
  • Updated colors to ensure Tella complies with WCAG AAA guidelines for sufficient contrast.

• Anonymous In-App Feedback:

  • Introduced an anonymous feedback method for users. This feature allows users to send messages to the Tella team when they are unable to contact us through other channels.

• Bug fixes and maintenance:

  • Addressed a crash issue on the audio recorder.
  • Resolved navigation issues related to the back button.
  • Loaded new translations.

Android: Tella 2.4.1 (165) - Released on December 12, 2023

• Fixed a bug that rested user settings when changing the language.

Android: Tella 2.4.0 (164) - Released on November 2, 2023

• accessibility Improvements: Users can navigate sequentially through content, and all validation errors and messages to users are announced by screen readers.
• Edit media: Users can crop and rotate images whithin Tella's encrypted container. Read more.
• Bug fixes: Fixed % bug on Calculator Camouflage, crashes and navigation issues.
• Technical Improvements: We refactored Tella's architecture and unified the code's programming language to Kotlin, we added documentation and unit testing to the code base to improve the app sustainability and simplify maintenance.

Tella 2.4.0 hides the Delete Tella option on the Quick Delete settings for phones that do not support it. We will be working on a fix for this issue on the next release.

Android: Tella 2.3.0 (158) - Released on September 20, 2023

• Added the ability to erase all content in Tella after a custom number of unlocking attempts. We added a security setting that allows user to choose the number of failed unlocking attempts and whether Tella shows a visual indicator of the remaining unlocking attempts or not.
• Bugfixes for the Uwazi connection on Date and Geolocation fields.

Android 2.2.1(156) - July 14, 2023

• New languages: Kurdish and Persian
• Automatically upload media files to Tella Web as soon as they are captured
• Automatically delete media files as soon as they are auto-uploaded to Tella Web
• Background submission of Reports.
• Fixed bug on with the 0 key in one of the themes of the Calculator App.
• Added the option to preserve metadata when importing files to Tella.

Android 2.1.0(152) - May 16, 2023

Lauched Reports, a quick way to back-up media files to your organization's server (if you work with an organization):

• Connect to a Tella Web project in Settings > Servers
• Quickly send reports, including media files (photos, videos and audio) and a text description

Also in this update:

• New camouflage options (calculator themes and icons).
• The possibility to delete the original file from the phone's file system after importing it into Tella.

iOS

iOS: Tella 3.2.0 (153) - Released on August 10, 2026

• Uwazi connection improvements:
  • Primary Documents' field now allow PDF selection from both the Tella Vault or the device.
  • Supporting Documents can now include all types of file selection from the Tella Vault or the device.
  • Draft, Outbox and New entity templates update when pressing the "Refresh Templates" button.
• All translation management is now done on Weblate. Please consider contributing by helping us localize Tella.
• Bug fixes and minor improvements:
  • Fixed a crash that happened during concurrent large video imports.
  • Refactored the format of all the app's strings to maximize translation memory usage.
  • Improved error messages for incorrect PIN in Nearby Sharing's manual connection.
  • Fixed "Welcome to Tella" screen that was shown briefly before the Lock screen.
  • UX fixes for smaller screens.

iOS: Tella 3.1.0 (150) - Released on July 15, 2026

• Implemented security fixes detected by our most recent security audit
  • Moved encryption keys to the Keychain.
  • Implemented mTLS and enforced certificate pinning for both the sender and receiver in Nearby Sharing. This is a mitigation for man-in-the-middle attacks.
• Bug fixes and minor improvements:
  • Simplified the Nearby Sharing manual connection flow: pre-filled the port field and added automatic dot insertion after each octet while typing the IP address.
  • Added an Unlock button when authenticating with Password.
  • Improved error messaging for failed Uwazi submissions: the app now shows a specific error when the failure is caused by an unsupported field marked as required.

iOS: Tella 3.0.0 (144) - Released on May 20, 2026

• Implemented Nearby Sharing: Nearby Sharing lets users securely share files in physical proximity. Nearby Sharing is fully offline, available across platforms and devices, and assures end-to-end encryption.
• Implemented security fixes detected by our most recent security audit (to be published soon!).
• New languages support: Ukrainian.
• Bug fixes and minor improvements:
  • Added an option to hide the Tella Web connection URL from the Connection's settings.

iOS: Tella 1.19.2 (132) - Released on April 13, 2026

• Hotfix: Translations now load automatically (without reloading the app).
• Hotfix: Added missing translation tags.

iOS: Tella 1.19.1 (130) - Released on April 7, 2026

• Hotfix: Connection to some Tella Web project was failing, because of an old unused API parameter.

iOS: Tella 1.19.0 (129) - Released on March 19, 2026

• Improvements to the Tella Web connection to increase resilience against intermittent and slow connectivity:
  • Fixed bug: Auto-reports getting stuck in the Outbox.
  • Improved background submission: Ensures that submissions complete even if the app is in the background.
  • Implemented a retry mechanism to resubmit reports once the connection is restored.
  • Fixed bug: Fixed preview of HEIC files in the Tella Web server.
• Updated translations.
• New Languages support: Mizo.
• Bug fixes and minor improvements:
  • When a Report is completely empty, do not prompt to save as draft.
  • Add validation to avoid users to connect to the same Tella Web project twice.
  • Only show the "your draft will be lost" warning if there is actually changes to be lost.
  • Add contact info field to feedback form.

iOS: Tella 1.18.0 (114) - Released on January 30, 2026

• Completed onboarding tutorial for iOS and added lock-protection guidance for new users.
• Refactored permissions, prioritizing user's privacy:
  • Sunsetting submissions to a Shared Drive folder for the Google Drive Connection: the amount of permissions that users needed to grant to Google to allow Tella to submit directly to a Shared Drive was too broad, and unacceptable for the Tella users' context.
  • Used more granular permissions on the Google Drive Connection: now Tella only has permissions to view and edit files submitted using Tella (and anything else).
• Bug fixes and minor improvements:
  • Solved an issue that prevented the Quick Delete button to be triggered in Right-To-Left languages.
  • Solved image editing view for iOS 26+.

iOS: Tella 1.17.1 (111) - Released on December 16, 2025

• Hotfix: Adapt code to allow missing properties on the Uwazi Server connection, this solves the issue that prevented some users to connect to certain Uwazi servers.

iOS: Tella 1.17.0 (109) - Released on November 20, 2025

• New language: Chinese.
• Implemented onboarding flow for iOS.
• Technical maintenance task to be able to support iOS 26.
• Uwazi Connection improvements:
  • Fixed error on for Uwazi server connection, adapting Tella to Uwazi API changes.
  • Added support for nested attributes in the Select property.
• Bug fixes and minor improvements:
  • Improved explanations for quick delete and add a default value.
  • Improved file bottom sheet by showing the full file name in the bottom sheet.

iOS: Tella 1.16.0 (98) - Released on Aug 4, 2025

• New language: Azerbaijani.
• Bug fixes and minor improvements:
  • Solved a bug that prevented trimmed audios to be saved.
  • Solved issue on Google Drive connection.

iOS: Tella 1.15.0 (96) - Released on May 20, 2025

• New language support: Ndau.
• Implemented Rotate Video.
• Make Play button only play the selection while editing Audio or Video.
• Bug fixes and minor improvements:
  • Removed duplicated navigation bar for documents.

iOS: Tella 1.14.0 (92) - Released on March 6, 2025

• Fixed preview of HEIC files.
• Added Indonesian, Tsonga and Portuguese (Mozambique) language support.
• Implemented limited access to photo gallery.
• Bug fixes and minor improvements:
  • Fixed the navigation bar that got stuck on file information screen after watching a video.
  • Fixed thumbnails for recently edited images in recent files.
  • Fixed the count of remaining attempts when a user inputs the wrong lock (when the "delete after failed unlock" feature is enabled).
  • Remove the button to edit PDF files (not yet supported).
  • Solved a crash when editing a video and exiting without selected either options to discard or keep the changes.
  • Changed the text of edit media confirmation message to make it explicit that the file is saved as a copy of the original one.
  • Changed the edit media screen so that the play button only plays the selection for Edit Audio and Edit Video.
  • Fixed an issue preventing going back to the previous screen after updating the password/pin in Settings.
  • Fixed an issue on smaller phones (for example iPhone 8) where the Quick Delete confirmation screen didn't fit in the screen.
  • Fixed an issue in Reports where the Submit screen was not scrollable and the Submit button was inaccessible when many files were attached.
  • Fixed an issue where the label for password setup during Onboarding was not fully visible.
  • Fixed an issue where the + button was not tappable when Tella's folders had too many items
  • Updated the text in Quick Delete settings to say "Delete files" instead of "Delete vault".
  • Fixed an issue where the menu with the Share and Save to device options only appeared on the second attempt.
  • Fixed an issue where the back button was not working after viewing a video from the All Files folder.
  • Made all elements on the homescreen scrollable, do not keep connections and recent files fixed on the top.

iOS: Tella 1.13.0 (88) - Released on Junuary 6, 2025

• Added the possibility to trim videos directly inside Tella's encrypted container. Read more about editing media in Tella.
• Added Bengali language support. See language accessibility.
• Bug-fixing and minor improvements:
  • Fixed bug: Tella now only allows moving a file to a different folder from the All Files folder.
  • Fixed typo in the Quick Delete description.

iOS: Tella 1.12.0 (84) - Released on November 27, 2024

• Added support for the Dropbox connection that allows Tella users to upload the data they collect directly to their Dropbox account. Read more here about the connection.
• Added the possibility to trim audios directly inside Tella's encrypted container. Read more about editing media in Tella
• Bug-fixing and minor improvements:
  • Fixed bug: Renaming audio while recording takes the name or last edited audio.
  • Added link to the documentation on the "Connections" screen, for instructions on how to choose a server.
  • UI fixes for all connections.
  • Updated the About and Help page linking to FAQs and to "Get started guide for iOS".
  • Fix navigation issue with Back button on "Connect to server" screens.
  • Adapted quick delete options to also delete connections data for new connections.

iOS: Tella 1.11.0 (81) - Released on October 21, 2024

• Implemented the Nextcloud server connection that allows Tella users to upload the data they collect directly to Nextcloud. Read more about the Connection here.
• Bug-fixing and small improvements:
  • Fixed the progress view and cancel action for large files in the Report view in all Connections.
  • Hid "use shared drive" button if not using an organizational account.
  • Unified the required/optional fields in all Connections.
  • Fixed the UI for labels on the Servers view when there is an existing connection.
  • Fixed visual bugs on entities and delete entity cards for Uwazi connections.
  • Fixed edit connection title.
  • Deleted unused WebView class that was flagged in the latest security audit.

iOS: Tella 1.10.0 (79) - Released on September 11, 2024

• Implemented the Google Drive server connection that allows Tella users to upload the data they collect directly to either their personal Google Drive folder or to any organizational shared drives they are connected to. Read here more about the integration.
• Added support for Vietnamese.
• Bug-fixing and small improvements:
  • Fixed issue with primary files submission in Uwazi.
  • Fixed issue when deleting submitted entities in Uwazi (name was changed).

iOS: Tella 1.9.0 (75) - Released on June 25, 2024

• Added support for the relationship property type in the Uwazi connection.
• Added offline support for the Uwazi server connection (Drafts, Outbox and Submitted tabs). More details here.
• Bug fixing and small improvements:
  • Run all remaining database migrations on every update. This bug was causing an inconsistent database state for users who don't use Tella often.
  • Fix the strip EXIF metadata feature that had been broken since the last database migration.
  • Show a warning if the users tries to delete a file that's being used in server connection that's not submitted.
  • Hide password field in a new Tella Web server connection.
  • Make the select field on Uwazi connections scrollable.
  • Fix back button issues on the onboarding flow.
  • Fix the import functionality when no permissions has been granted.
  • Keyboard was over text fields when renaming audio, folders or files.

iOS: Tella 1.8.0 (70) - Released on June 3, 2024

• Edit media: Users can crop and rotate images within Tella's encrypted container. Read more.
• Bug fixes:
  • Placeholder with current name missing from rename file while recording.
  • Rename folder shows the label "Rename" instead of "Rename File".
  • Show attempts selected on the "Delete after failed unlock" and a handle longer languages.
  • Solved UI issue in the label when creating PIN when installing Tella (only in iOS 14).

iOS: Tella 1.7.0 (67) - Released on May 2, 2024

• Added support for a content distribution feature that allow organizations to securely disseminate resources and materials from a Tella Web space to their on-the-ground users directly within Tella's encrypted container. This includes creating PDFs on Tella Web and sharing training material, guides for data collection, or documents. Resources can be accessed offline after download. More information here.
• Technical maintenance tasks and bug-fixing:
  • Keep Tella on foreground (do not let it go to sleep) while encryption is in progress.
  • Back button right after connecting to Reports now redirects the user to the Settings screen.
  • Allow users to select today's date on the Date field in the Uwazi connection.

iOS: Tella 1.6.0 (66) - Released on April 8, 2024

• Implemented background encryption so users can continue collecting data while the encryption process takes place.
  • Added a background activity tray so users can check the progress of file's encryption.
  • Moved the settings button to the bottom navigation (top right) to make space for the new notifications button, which opens the background activity tray (top left)
• Updated the encryption algorithm.
• Fixed a bug that prevented big files (more than 1GB) to be saved into Tella vault.

iOS: Tella 1.5.1 (63) - Released on March 8, 2024

• Fixed bug on the Uwazi server connection for private Uwazi instances.

iOS: Tella 1.5.0 (62) - Released on February 19, 2024

• Uwazi server connection: We added the possibility for users to connect to an Uwazi server to send the data they collect using Tella. We include Text, Numeric, Date, Rich Text, Media and Select fields. You can read more details about the new server connection and the supported features and properties on the Uwazi documentation page..
• Improved the confirmation message when deleting multiple files and folders.
• Added language support: Portuguese and Russian.

iOS: Tella 1.4.0 (59) - Released on January 9, 2024

• Anonymous In-App Feedback:

  • Introduced an anonymous feedback method for users. This feature allows users to send messages to the Tella team when they are unable to contact us through other channels.

• Technical Improvements:

  • Added a local database on the phone to manage the file structure and folders. This update serves as a long-term solution to the incident involving hidden files on iOS that occurred in May 2023.

• Bug fixes and maintenance:

  • Fixed issue with the lock timeout and some visual bugs.
  • Loaded new translations.

iOS: Tella 1.3.0 (54) - Released on Septemeber 18, 2023

• Added the ability to erase all content in Tella after a custom number of unlocking attempts. We added a security setting that allows user to choose the number of failed unlocking attempts and whether Tella shows a visual indicator of the remaining unlocking attempts or not.
• Added the possibility to preserve metadata when importing files into Tella
• Fixed a bug that prevented videos from being deleted from the device when imported into Tella.

iOS 1.2(49) - July 14, 2023

• New languages: Kurdish, Persian, Belarusian, Arabic, Tamil and Burmese
• Automatically upload media files to Tella Web as soon as they are captured
• Automatically delete media files as soon as they are auto-uploaded to Tella Web
• Background submission of Reports.

iOS 1.1.2(46) - June 20, 2023

Fixed the missing files incident.

iOS 1.1(43) - May 17, 2023

Launched Reports, a quick way to back-up media files to your organization's server (if you work with an organization):

• Connect to a Tella Web project in Settings > Servers
• Quickly send reports, including media files (photos, videos and audio) and a text description

Also in this update:

• Delete the original file from the phone's file system after importing it into Tella.
• Configure a quick delete button to erase the content of Tella in an emergency.

Android FOSS

Android: Tella FOSS 3.3.2 (254) (based on Android 3.3.2) - Released on August 28, 2026

• Hotfix: Fixed a bug that made files stored inside folders also appear at the top level of "All files" after updating, so they looked duplicated.
• Hotfix: Fixed "Move to folder" when the destination folder is empty, and prevented moving a folder into itself.
• Hotfix: Updated the French success message shown after submitting a form.

Android: Tella FOSS 3.3.0 (251) - Released on August 26, 2026

• All translation management is now done on Weblate. Please consider contributing by helping us localize Tella.
• Updated the onboarding flow and the advanced configuration options, including camouflage.
• Multiple improvements to the Uwazi connection:
  • Implemented count indicators to show the number of entities in each tab (Drafts, Outbox and Submitted).
  • Reviewed and improved copy and wording.
  • Added the possibility to swipe between tabs.
  • Improved UX to make it more accessible, including updated fonts, colors and sizes.
  • Unified and reused existing components.
  • Added Server URL validation: Tella now shows an error message if the URL is invalid or does not correspond to a valid Uwazi instance.
  • Added a warning when users try to delete a media file from their Tella vault that is pending submission in one of their Uwazi entities.
  • Added confirmation snackbars for destructive actions.

Android: Tella FOSS 3.2.0 (248) (based on Android 3.2.0) - Released on July 18, 2026

• Implemented security fixes detected by our most recent security audit
  • Implemented mTLS and enforced certificate pinning for both the sender and receiver in Nearby Sharing. This is a mitigation for man-in-the-middle attacks.
• Bug fixes and minor improvements:
  • Simplified the Nearby Sharing manual connection flow: pre-filled the port field and added automatic dot insertion after each octet while typing the IP address.

Android: Tella FOSS 3.1.0 (242) (based on Android 3.1.0) - Released on Jun 8, 2026

• Replaced the geolocation provider.
• Bug fixes and minor improvements:
  • Solved a crash on camera that was affecting some models of Pixel phones.
  • Fixed an "import and delete original" bug that prevented the original file from being erased from the device in some cases.
  • Fixed a screen security issue during onboarding (some screens were not hidden).
  • Corrected the capitalization of buttons.
  • Fixed the geolocation permission flow and solved a bug that prevented the geolocation flow to continue the first time the location permission was granted.
  • Added an option to hide the Tella Web connection URL from the Connection's settings.
  • Fixed a bug that didn't properly removed camouflage when changing lock type.

Android: Tella FOSS 3.0.0 (237) (based on Android 3.0.0) - Released on May 20, 2026

• Implemented Nearby Sharing: Nearby Sharing lets users securely share files in physical proximity. Nearby Sharing is fully offline, available across platforms and devices, and assures end-to-end encryption.
• Implemented security fixes detected by our most recent security audit (to be published soon!).
• New languages support: Ukrainian.
• Bug fixes and minor improvements:
  • Solved camera problem: the top settings bar was hidden in some devices.
  • Solved crash that prevented Tella unlocks when items of the vault didn't have a preview on non-Google file systems.
  • Fixed crash on delayed navigation callbacks (for fast clicking on attachments).
  • Fixed import from device: Tella now supports any file manager.
  • Made sure that the file is imported to Tella Vault when using the "Import from device" from inside a report (on any connection).

Android: Tella FOSS 2.20.2(233) (based on Android 2.20.2) - Released on April 22, 2026

We updated Tella FOSS, the version of Tella published on F-Droid that is 100% Free and Open-Source Software (FOSS). This updated version includes open-source map, location provider and Camera libraries. It doesn't include crashlytics, LoggingInterceptor and any other non-FOSS component or dependency.

This version is based on Tella Android 2.20.2 and includes the following features:

• Big refactor (including adding product flavors) to be able to merge Tella Android and Tella FOSS codebases into a single one.
• Implemented the Nextcloud server connection that allows Tella users to upload the data they collect directly to Nextcloud. Read more here about the connection.
• New Languages support: Bengali, Ndau, Azerbaijani, Chinese, Mizo
• Improved document support:
  • Added thumbnail placeholders for document files.
  • Display all common document types in the Documents folder (e.g., TXT, ODT, DOC, DOCX, XLS, etc.).
• Uwazi connection:
  • Changed algorithm for generated id property, to match the one generated by Uwazi.
• Added added lock-protection guidance for new users (in on-boarding) and while changing lock.
• Improvements to the Tella Web connection to increase resilience against intermittent and slow connectivity
• Multiple bug fixes and minor improvements, prioritizing stability and accessibility.

Android: Tella FOSS 2.11.0 (based on Android 2.11.0) - Released on February 25, 2025

We updated Tella FOSS, the version of Tella published on F-Droid that is 100% Free and Open-Source Software (FOSS). This updated version includes open-source map, location provider and Camera libraries. It doesn't include crashlytics, LoggingInterceptor and any other non-FOSS component or dependency. We completely removed all Google Play Services dependencies.

This version is based on Tella Android 2.11.0 and includes the following features:

• Added support for privacy-preserving analytics. All analytics are disabled by default and opt-in.
• PDFs can now be opened and viewed directly inside Tella FOSS.
• Edit media: users can edit images within Tella's encrypted container
• Feedback: users can now share anonymous feedback, bug reports, or improvement suggestions with the Tella team directly from inside Tella.
• Added support for the Tella Web connection, including the ability to download and view resources uploaded by admins.
• Implemented background encryption so users can continue collecting data, taking photos, videos, and audio, and importing files while the encryption process takes place.
• Added the possibility to delete the original file from the phone's file system after importing it into Tella.
• Added support for the relationship property type in the Uwazi connection.
• New Languages support: Kurdish, Persian and Vietnamese.
• Added new accessibility settings.
• Fixes to improve performance and security.

A detailed list of features available on each platform is available here.

Android: Tella FOSS 2.0.15 (based on Android 2.0.15) - Released on July 10, 2023

A version of Tella included for the first time on the F-droid store. This a 100% Free and Open-Source Software (FOSS) version of Tella Android. We removed all trackers, changed map and location provider and also changed the Camera library to CameraX, removed crashlytics, LoggingInterceptor and any other non-FOSS component or dependency. We removed completely all Google Play Services dependencies.