A great example of clean design, narrative and execution whilst having little utility. Micro interactions should above all else, move the conversation forward such that the lack of the micro interaction is a detriment to the user experience. Whilst these are very well executed, I question the utility.
The most basic use of a microinteraction animation is in transitions. However, an app can truly delight users when animation is used in ways beyond the standard scope of actions. The button below seamlessly changes states and serves dual functions: to inform the user and to create a moment of wonder.