We all know that coloring helps to relax, that is why cololoring apps boomed on the App Store not long ago. The problem is building a healthy habit is tough, many people start coloring, but then get back to smoking or playing hard games after a working day. So we gamified the experience: users collect the colored pages, they can exchange the pages they don’t like for a new one, and they can track their friend’s performance. That really helps to get started!