SimpleX Chat - private and secure chat app - is now available as public beta for Android - you can install it from this link.
SimpleX Chat for terminal is built in Haskell, and with a lot of help we made the same core work both on iOS and Android platforms.
To exchange messages privately you can connect either via the invitation link you can share from the app or by scanning a QR code from the app (e.g., during video call or in person).
We really look forward to your feedback - you can connect to the team from the app settings (it will be myself or somebody else replying to you:)
Please star the repo on GitHub (thanks a lot if you did already!) and share Android app beta with your friends - iOS is also available!