I recently tried to move people over, and the iOS situation is bleak. It seems like notifications don't work at all in any app, which is a big problem for chat. Also, one of them (I think Siskin?) doesn't display sender name/avatar in group chats, so you can't tell who sent what.

There's also some weird behavior with how E2EE works, which is causing me problems in group chats. Initially it worked, but now people are unable to read some messages with errors like "this message was not encrypted for this device"

FWIW, everything works great on Android with the Conversations app, and also I admit I haven't really RTFM'd too much so it may be my fault as a lazy admin.

Edit: this is with ejabberd btw