What is Proto.io?
Designed specifically for mobile, Proto.io can simulate everything an app can do. That includes interactive touch gestures, screen transitions and animating any UI item in a prototype. It is perhaps the only mobile prototyping tool that allows users to create realistic, sharable prototypes that work as a real app should and experience their prototype on the actual device. Proto.io is also the first prototyping tool to ever include custom device support, to allow prototyping for anything with a screen interface - from SmartTVs to refrigerators.
Proto.io is 100% web-based and offers a familiar and intuitive drag-and-drop user interface, with no coding required. Ideal for UX professionals, Interaction Designers, mobile and game designers, coders, and app enthusiasts.
Comments and Reviews
Said about Proto.io as an alternative
It looks more beautiful and exactly how a real product will.