There are many useful photo apps to create incredible photo effects on App Store, but if you want to capture sequence photos and combine them, the camera app Nabit may be mire suitable for you.
Nabit is a unique camera app developed by CloudRaker, and designed to offer you an easy to capture action sequence photos with your iPhone, iPod touch 4G or iPad 2 and create incredible photo effect. All you need to do is to fix your device and press the shutter, the iPhone app will automatically take 5 photos, then you can wipe the part that you want to reserve on each photo, finally, the camera app will generate an awesome sequence shot. The camera app features intuitive user interface, and comes with a guide in order that you can completely understand how the iPhone app works.
Nabit with a size of 2.7 MB is compatible with iPhone 3GS/4, iPod touch 4th and iPad 2 running iOS 4.0 or later. At present, the iPhone app is free for a limited time. If you’re interested, jump to App Store for more details.