I've been using it for comms with some friends and family when we're out of conventional network range. It works great, the pairing process is a bit of a barrier for securitu-muggles, but it works perfectly.

My only annoyance is that I can't run the mailbox program on a regular Linux/docker server.

It's great, it does exactly what it says it does. Including using slot of battery power.

I even used it while traveling with friends. We couldn't have our seats together in the airplane and the capability to chat and shitpost over bluetooth securely was kinda nice without annoying everyone.

My biggest annoyance is the inability to migrate a profile and the existing chats across devices, even though that's good security-wise.

https://www.messenger-matrix.de/messenger-matrix-en.html

^^ Good comparison with other IMs.

Briar was nice for chatting when you only have Bluetooth connectivity. Messaging otherwise is subpar

Solid choice as long as you don't mind the trade offs. If you are actually going to use it setup a mailbox.

Honestly Briar feels more like a social media app that a encrypted messager.

i use element for briar, with element you can have a federated discord

edit: i meant matrix