VCTransitionsLibrary : iOS View Controller Transitions Library
This is a collection of iOS7 animation controllers and interaction controllers that provides various kinds of transitions including flip, fold etc. You can create custom view controller transitions with iOS 7. With this library, you have a nice collection of custom animations that you can drop directly into your project. This library also provides a number of ‘interaction controllers’ which can be used with any of the custom animations in order to make the transitions interactive. The animations contained in the library are flip, fold, crossfade, explode, turn, cards, NatGeo, portal and cube.