[herogreen]

If you want to use one on your Android phone without Google apps, then only Telegram will work.

I use Tox with my geek friends and Telegram with my less geek friends. I also plan to give a try to ring.cx

[zeratax]

This is just wrong, pls stop spreading misinformation.

The gcm dependency was removed 10 months ago: https://github.com/WhisperSystems/Signal-Android/commit/1669...

You can get the apk outside of gplay on their website: https://signal.org/android/apk/