This application is fun in two ways, figuring out how it works, and messing with your friends minds. Ask them to think of any card in a standard deck and make it appear on the screen of your phone. It is very simple to use (once you figure out the magic trick). You can confuse your friends for a long time before they would ever be able to figure out the trick without doing it themselves. On my Incredible when I hit the power button with a card open it freezes, but besides that one small glitch it is a fun app.