Fast Camera for iOS gives you another way to take the perfect picture, by snapping tons of shots quickly and letting you pick the best one. But you can also turn your photos into a stop-motion video, or tinker with the settings to take burst shots or timed group photos.
It's important to note right away: when you launch this app for the first time it starts taking pictures in rapid-fire. The app defaults to autotaking shots so you can be ready for anything, but if you don't know that the first time you use the app, you'll suddenly realize you've taken 30 pictures or more before pressing the stop button. Go to the settings by pressing the gear icon in the upper left to turn off the Auto-on switch while you get used to using Fast Camera (you can always switch it back later).
When you use Fast Camera, all of your resulting photos are gathered in a folder and you can view every shot the app took to pick the best of the lot -- great for trying to get a perfect picture in just about any setting.