This free sketching app lets you do quick-and-dirty prototyping to try out (and share) user-interface ideas. - Sketch a series of screens using your finger or a stylus. - Link them together with hotspots. - Hit "Play" and try out (or demo) your rough UI. - Share your prototype as clickable HTML by email, Dropbox, etc. The goal of Quick Proto is to let you draw rough ideas as fast as possible - sketch, link, share, done. Works on all screen sizes (phone, small tablets, big tablets). Better