App is pretty usable at this point, things missing:
1) Audio mixing. This means that whenever multiple people are talking at once you will notice stuttering.
2) Ability to join channels with passwords.
3) Leaving the app disconnects from server, this is a temporary workaround.
Other than that it's mostly cosmetics, settings, etc.
It is however already possible to add servers, connect to them, join channels, talk to people, and listen to people (as long as it's one person at a time
We always appreciate people helping out so long as they're knowledgeable of Android development. Feel free to drop by on irc.freenode.net #mangler!