Bitmask

Bitmask is an Android application from LEAP for encrypted communication. Its purpose is to make privacy-oriented communication usable from a mobile device without presenting itself as a specialist tool. The app is distributed under the GPL-3.0-only license, which places it in the free software category and allows its source code to be studied and modified under that license’s terms.

The available information identifies Android as the supported platform, so it is mainly relevant to users looking for a phone or tablet application rather than a desktop program. The description does not specify particular protocols, account types, or service providers, so those details should be checked in the project’s own documentation before planning a deployment.