SUP! is a fun, fast and private mobile chat application for Android users. SUP! is still is beta, but our goal is to design secure chat application where you don’t need to worry someone can look your messages. We are using RSA encryption together with option of messages being deleted after the chatting is done. If that is not enough for you, you can enable option for deleting message when other person sees it.
Second part of SUP! application is anonymous chatting. Create a one-time username and chat room, and share the name of your chat room with anybody so they can join your room and chat anonymously.
It is Fully private and fully secure.