TRIfA is a Tox Client for Android. it's still currently in heavy development.
It uses the Tox protocol which is Peer to Peer it will have a higher battery usage than other Messenger apps.

If you are stuck with Antox or uTox (µTox) for Android try this Tox Client that was especially optimized for Android.

TRIfA is open source you can find it on Github https://github.com/zoff99/ToxAndroidRefImpl/blob/zoff99/dev003/README.md

To get more information about Tox please visit https://tox.zoff.cc/

To get in touch with the Developers of TRIfA join https://matrix.to/#/#trifa:matrix.org