This app puts you in the role of a master thief trying to break into a maximum security vault. It's called, The Heist. In the game you have to solve the puzzle to find out what's inside the mysterious locked vault. As soon as you start the game, your phone will ring and a strange caller says she needs your help to crack the code. There are four different types of puzzles and dozens of challenges. The more puzzles you solve the more security systems guarding the vault are unlocked.
The Heist is currently on sale for free. It is available only on the iPhone.