MindTheClub

MindTheClub is a private messenger for Android that never asks for your phone number or your email. Messages and calls travel directly between devices, encrypted end to end, and are never stored on our servers.

The code is open source under GPLv3, so anyone can check what the app really does. It also runs without Google Play services, for example on GrapheneOS.

No ads, no tracking, no data to sell. You get a free 30 day trial that starts with your first message, then it costs 1 euro a month.