I knew what you pick!! iPhone knows your card from four Aces. That is "Invisible Four Aces", Magic application.instructionFirst, face down the iPhone.Pick one card from four Aces.Then, turn the iPhone and it shows the card what you picked.Very easy, anyone can play, and you will be a star of the party with surprising result.
||Compatible with iPhone, iPod Touch, and iPad. Requires iOS 3.1 or later. iTunes account required