I have been watching Lego Stop Motion movies on YouTube for years now. I finally took sometime to create my own using the iPhone App called StopMotion. The app costs .99 at the iTunes App Store. Of course this was my first attempt, but this app made it pretty simple. It has an onion skin overlay which leave a shadow image of your last movement on the screen. The program also has an automatic timer setting. This lets you set the camera to take pictures every 5, 10, 15 seconds.