Tella is Open source
The security and privacy of Tella users is at the core of our mission. It is therefore natural for the application's code to be entirely open-source. This means that it is publicly available for review: anyone can audit our code to verify that we don't misuse user data, that we actually do what we say, and that our code is robust.
Tella's code is publicly available for all platforms: Tella Android, Tella iOS, Tella Desktop, and Tella Web. Rather than trust us, you can audit the code yourself or ask someone you trust to do it, or read the reports that independent security firms wrote after auditing Tella's code.
We also publish and maintain a Free and Open Source version (FOSS) of Tella for Android, which doesn't contain any closed-source or proprietary library or dependency. The code is shared across all Android's version of Tella and we generate the FOSS or regular Android Tella using product flavors at build time. When possible, we use FOSS libraries and dependencies for both versions of Tella Android. The FOSS version of Tella Android is available on the F-droid store.
A detailed list of features available on each platform is available here: