How about Chatsecure with Jabber and OTP? Isn't that a viable alternative too? Doesn't require you to use a phone number, so it works nicely on tablets or deskt

How about Chatsecure with Jabber and OTP? Isn't that a viable alternative too? Doesn't require you to use a phone number, so it works nicely on tablets or desktops (pidgin+otr), etc.