Meaningful Transitions - Motion Graphics in the User Interface« deals with the use of animations in the user interface. It documents transitions in a clustered way to show at which point transitions can be a helpful extension to a static user interface, because of cognitive benefits to enhance the user experience.
Free tool to crate interactive mobile prototypes complete with gestures, transitions & animations for web, iOS & Android. Can
send collaborators a link to open designs in a browser or on a mobile device, or present them in real-time using LiveShare presentation tool. Clients & stakeholders leave comments on the design.