Motion
A library used to create beautiful animations and transitions for iOS
... transitions that may be used by UINavigationControllers, UITabBarControllers, and presenting UIViewControllers. Motion provides the building blocks necessary to create stunning animations without much effort. Motion's animation API will make maintenance a breeze and changes even easier. To create an animation, use the animate method of a view or layer and pass in a list of MotionAnimation structs. MotionAnimation structs are configurable values that describe how to animate a property.