Interactive animations in iOS

Animations can be used to tell the user a million things.

The types of animations boils down to 2 kinds: fire-and-forget animations and truly interactive animations. Most animations that we see today belongs to the first group. Fire-and-forget animation is exactly what it sounds like; an animation starts, and then it continues to do its thing until its time to stop. But as the design of applications evolve into becoming increasingly simple, a simple animation is just not enough to keep the user informed of what is happening on screen.