Who is Devil for iOS

There is one devil hiding among your friends!! Find it out!!! Simple, funny and useful decision maker app! Must have for gangs and friends! Get one finger from each of you and your friends onto your iPhone/iPod/iPad, this magic app will tell you who is "the devil"!!! And then, the poor "devil" must do anything you guys want him/her to do. (showing some funny dance, chatting up strangers, truth, dare, just be silly to make everyone laugh, or even paying the bill... you guys decide :D )