Tella
Document & protect
In challenging environments, with limited or no internet connectivity or in the face of repression, Tella makes it easier and safer to collect, protect and hide sensitive data.
Why Tella?
If you are an activist, journalist, human rights defender, or anyone who needs to keep sensitive information safe, you can use Tella to:
- Protect yourself from physical and digital repression while collecting and storing sensitive information.
- Protect the data you collect from censorship, tampering, interception, and destruction.
- Easily produce high quality documentation that can be used for research, advocacy, or transitional justice.
1. Protect your data
- Encrypt your files: Tella automatically encrypts your photos, videos, and audio recordings as soon as they are captured.
- Hide your files in the device: your files are inaccessible from the phone's regular gallery or file explorer. You can only access them in the app.
- Lock your files: set a PIN or password to protect your files. Entering the correct lock is the only way to decrypt the files stored in Tella.
- Mask the app: change the look of Tella to hide it from people searching your phone.
- Share your files: choose your preferred method to send your files to other Tella users or to a remote location, like a drive or server.
2. Collect and share evidence safely
- Camera and recorder inside Tella: take photos, record videos and audio directly in Tella so that your files are immediately encrypted and hidden in the app.
- Tella integrates with Uwazi, Open Data Kit, Tella Web, Google Drive, Dropbox and Nextcloud. Pick the platform that best suits your needs and share data directly from Tella.
- Offline-first: collect data offline and submit it only when you reach a reliable internet connection, or transfer files to nearby devices without any internet connection at all.
3. Be prepared for high-risk situations
- Crossing borders: keep sensitive files in your Tella vault to protect them from device searches.
- Protests: take photos and videos using Tella's camera and share them with a nearby phone, even when mobile networks are down.
- Raids: delete your files in seconds.
- Internet shutdowns or monitored networks: send files to other Tella users without internet, using Nearby Sharing.
4. Tella is free, multilingual, and open-source
- Free forever: Tella is designed for those whose safety is at risk. It is free to download and use, and will remain free forever.
- Choose your language: Tella is currently available in 25 languages.
- Trust the code: The code for Tella is open-source and publicly available so that researchers, security analysts, and developers can freely audit and reuse it. We publish the security audits that independent firms have performed on Tella.