Congrats on getting this ‘joke’ off the ground!

I think the greatest potential of this app thus far is that your development and especially overhead costs have been very low. You may be able to add some functionality that does differentiate it from iMessage and attract a user base.

I like the interface, especially the desktop one. It looks less like a messaging app and more like a note-taking or collaborative app, not sure if that indicates the direction you want to go.