iMotion is hands-down the best stop-motion app I have seen. It is educational and has a simple enough interface that kids can easily use it on any iPhone or iPad. The videos it creates are high quality and can be saved to a computer, or posted online to places like Facebook. Once your child learns how to use the app, prepare yourself for hours spent creating their own clever stop-motion short films. We used this app in one of our library programs. (I found that action figures and LEGOs are some easiest items to use for stop-motion.) The kids LOVED making their own film. Parents later reported that some of them went straight home and started making films of their own. In all, it is an app that should not to be missed.