Designers can use their favorite design tools like Photoshop and Sketch to design the finest details of the user interface for their app. Single or multiple touch interactions can be applied on any UI element (layer) on each screen. Sophisticated animations can be created on-screen as well as screen transitions, using the powerful timeline animation features that Proto.io offers.

iPad mobile tablet prototype using hotspots, carousel and tab bar for navigation.

An example of a sticky scrolling sidebar (website)