# Threema Libre (open-source messaging app)

> Threema Libre is a free, open-source messaging app for Android. Secure and private messaging. It has 998 GitHub stars and is released under the AGPL-3.0-only license, and you can install it from F-Droid.

NOTE: A Threema Shop license is required, please visit: to get one. Threema is the world’s best-selling secure messenger, used by more than 12 million people in over 175 countries, developed in Switzerland, and designed with privacy and data protection in mind. Whether chats, calls, or files, everything is end-to-end encrypted, and no data trail is left behind. Instead of a phone number or email address, a randomly generated Threema ID serves as a unique identifier – anonymous and secure. Threema protects what really matters: your privacy. In contrast to the version distributed via Google Play, Threema Libre contains no proprietary libraries / components (like Google Play Services).

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/threema-ch/threema-android |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 998 |
| License | AGPL-3.0-only (open source) |
| F-Droid | https://f-droid.org/packages/ch.threema.app.libre/ (package ch.threema.app.libre) |
| F-Droid anti-features | Relies on a non-free network service; Depends on the developer's own network service |
| Google Play | not linked |
| App Store | not linked |
| Website | https://threema.com/products/private |
| Official | yes (published by the organization behind the product) |
| Category | Messaging & chat |
| Latest release | none on GitHub |
| Last commit | Sep 23, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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