Basically ChatSecure is a nice clean XMPP client (turns out XMPP is not actually that scary, and choosing a network is no worse than choosing an e-mail provider), that supports OTR (and now OMEMO, which is much better). For Android, there's conversations.im, which was the first one to really support OMEMO.
Basically means you can choose your client, networks handle the messages, and it's up to the client each person is using to handle the crypto.
https://copperhead.co/android/docs/usage_guide
Basically ChatSecure is a nice clean XMPP client (turns out XMPP is not actually that scary, and choosing a network is no worse than choosing an e-mail provider), that supports OTR (and now OMEMO, which is much better). For Android, there's conversations.im, which was the first one to really support OMEMO.
Basically means you can choose your client, networks handle the messages, and it's up to the client each person is using to handle the crypto.