It's live on Android, iOS and Desktop. Version 7 is live.
It works for me on 7.0. I am able to make a username but I have yet to use it as my friends probably don't have 7.0 yet
https://signal.org/
It works for me on 7.0. I am able to make a username but I have yet to use it as my friends probably don't have 7.0 yet