Nice recommendations. I want to know more about the functionalities and differences between Signal and SimpleX and then this new app you're bringing up. Signal requiring a phone number is a non starter for me. Plus they've been compromised a fee times. No thanks.
SimpleX isn't P2P is surprising. So your messages are sent via? Relays? The dev seems legit and lots of people vouch for it since I don't have the expertise to audit the code myself.
I run Tor and then SimpleX.
Will be interesting to try Keet.
I'll also check out Seth for Privacy's podcast.