Apparently the photo app can’t be used to add any photo effect on your photos. But if you want to play a joke on you friend, Fatify should be able to catch your eyes.
Fatify is an interesting photo app developed by Apptly, and designed for iPhone and iPod touch. The iPhone app features intuitive user interface so you can conveniently import a portrait photo from camera roll or use built-in camera function to capture a portrait photo for further modification. When overlapping the four matching parts with the eyes, mouth and the outline of the jaw on the portrait and tapping “READY”, you will get a hilarious video that shows you an interactive portrait gotten fat. Moreover, you can save the video into your photo library, or share it with your friends via MMS, YouTube, Facebook, Twitter and Email.
Fatify with a size of 17.1 MB is compatible with iPhone, iPod touch and iPad running iOS 3.1 or later. The iPhone app is free for a limited time at present. If you’re interested, jump to App Store for more details.