When the opponent disconnects right after a game, it ill make your session hang. Only way you can come back to the app is by power off and on your iPhone. This is painful.
Also, sometimes, the card wont unfold completely and again the solution is to restart the phone. There should be a way to clean the current session and start a new one, instead of power off and on the phone.
Otherwise the app is very good.
RajNall about Indian Rummy, v1.3