I would like to share you an interetsing app called "Find the Difference - CatchPlus"
CatchPlus is an exciting new social game that challenges you to spot the differences between two images while discovering new deals and earning rewards!
The best thing here is that it allows the users to add their photos in app's offical Facebook page, so that they will made our image as a puzzle in the game :-)
Have a look at the app and Download it for free from the Google Play Store!!