Its an iOS game having great combination of photo puzzle with facebook integration.
User needs to login with his facebook credentials, then he can upload his photos and convert those photos into puzzle (3x3 or 4X4). His friends can try solving his photo puzzles. User can spend coins to get hints while solving a photo puzzle.
A superb app having combination of social network, social media and feel of a game.
App partly build on the parse framework, need help with that.