Do you find you can't get things done? If you are king of the procrastinators, ruling over a realm of incomplete tasks, HabitRPG might be for you. This app is basically a to-do list manager, but it frames everything as a quest in your own personal RPG.
If you finish something successfully, you get experience and gold. Why would you need gold? To get better weapons and armor, obviously. When you fail at completing a task, the app docks you HP. The mobile app was also the subject of a kickstarter campaign. Note, this is the official app, but third-party clients have been available for a while.
HabitRPG has two visual styles. The actual to-do manager is clean and modern-looking. Although, the action bar is backward, and I don't know if I can cope with that, personally. The RPG elements of the app are 8-bit themed, which makes sense in context. HabitRPG is free if you want to give it a shot.