Your users won’t see your animation study, Sketch comps, or prototypes. What they will see is the finished product - so it’s really important to make sure that your app feels right on a real device! Animations that look great on your laptop often feel too slow when in-hand. Layouts that looks perfect on a 27-inch display might be too cramped on a 4-inch device. Light gray text may look subtle in Sketch, but it’s downright illegible when you’re outside on a sunny day. These animation timings,...