It's a good app - I just wish I could remember how to reset the blasted thing! I also like E's Invisible Deck app - really good and utterly simple. Also check out Penn & Teller's "P&T Chat" app - imagine texting either Penn or Teller for a card reveal! (Not recommended for iPod touches {no texting capability} or iPads {no phone capabilities and the screen would look insanely big}...)
Oh, you forgot to mention - the app has been temporarily "skinned" to coincide with the new movie, "Burt Wonderstone", and you now have a choice of decks and hi-res images well-suited for Retina Displays.