Core Animator for iOS
In this day and age, plenty of people are getting used to the idea of producing video and animations on their handheld devices. Apps such as Core Animator can help with that. It is a powerful app that lets you create complex animations and watch them in real-time on your iPad. It comes with useful features like trimmer, drag & drop interface, and iCloud sync.
The app supports live recording with slow motion. It has intuitive multi-touch navigation, so you can put the app to good use without a huge learning curve. You can use this app to export HD videos, GIFs, and other formats.