Zerion: a privacy-focused messaging app based on Briar's protocol
Zerion: a privacy-focused messaging app based on Briar's protocol
zerion.chat
Zerion — Private Messaging Over Tor
End-to-end encrypted messenger with no phone number, no servers, and full Tor integration. Post-quantum cryptography. Available on Google Play and F-Droid.

I heard about this in F-Droid's latest blog post.It is based on the Bramble protocol and is compatible with Briar.It removed mesh-networking features of Briar and added a couple new ones:
- voice messaging
- ML-KEM (post-quantum cryptography)
- disappearing messages
More technical details are shared on their blog.
Sources are on Github https://github.com/zerionproject/Zerion