This demo imitate two impressive effects of Evernote iOS version by using UICollectionView and Controller Transition, the implementation is not so complicated as it looks. And it's common to make a CocoaPods spec, but unlike so many popular specs, I think their right usage scenarios are limited. It could not be better if you find the project is helpful. By the way, every Star or Fork means a lot to me.
Please send an email to [email protected] if you have any questions or suggestion about the demo.