Emerging from the murky depths of the interwebs like a low-budget B-movie monster or something out of a 1970s Dr Who episode is Dark Messenger version 1.3.
This version is based on the latest Conversations XMPP chat app and has an added usability feature for initial setup. On the screen where you are first asked to enter your account details there is now a QR code button. If you have your onion JID as a QRcode, as it exists in Freedombone on the members screen, then you can scan it with your phone camera and the address and hostname fields are then populated automatically. This saves any fiddling around switching between apps, or trying to type long random addresses manually. The only thing you then need to do is enter the account password.
Dark Messenger is a version of Conversations restricted to using onion address based XMPP accounts. This makes opsec snafus much harder to commit, and always ensures that the metadata is protected from passive surveillance. "Just say no" to letter agency spooks and other random interweb flotsam. No Certificate Authorities are involved in the running of this app.
Dark Messenger will not get rid of the nubs.
Dark Messenger will not make you look five pounds thinner.
And it's available in no app store anywhere.
But you can download it from here.