Milestone is an application that takes the idea of Gamification and applies it to a task management application. There's a really great video explaining what Gamification is by Extra Credits. Video
I made an app very similar to this in High School with a partner for the Congressional App Challenge Link to application video but I didn't enjoy the UI and I wanted to recreate the app because my partner did the development. So I recreated the application to learn about Android development, revamp the design and produce a deliverable that employers can see.