Easily the best 'app' on the market. Your life is not complete without it. You basically take a pic of 2 or more people, and it swaps their faces and makes them look ****ed up. Hilarious. Hours of fun, especially if your friends are ugly to start with. You can swap animals. I swapped my dad's face with a cat's. Oh the laughter. If you have any sense, you will get this app. The end.