Platform: Android, iOS, Windows
For most of us gamers, we sometimes wish that everything we accomplish gave us XP points to level up and distribute attribute points. Even though it sort of works like that in real life, we don't really have a definite stats page to show us for it. HabitRPG aims to give us that RPG in our real lives. 
HabitRPG is essentially a jacked up to-do list app. You can define everyday activities or certain actions according to difficulty and accomplishing those give you XP, HP and coins. You can spend the coins to do a "negative" action as opposed to the productive "positive" actions. Let's say you studied for an hour, you tap the action and brand it as completed, upon receiving your coins, spend it on (real life) junk food then tap the corresponding action. I've been using it for a while and I actually managed to get more stuff done thanks to the rewarding feeling imaginary points give me. For those trying to accomplish things in a group, you could try the quest system which lets the users form parties to do a task together. 
The app was a bit laggy on my Walton Primo X1 which has a 1.2ghz quad-core processor coupled with a gigabyte of RAM, so expect a few loose ends. It's an open-source app so actually expecting the final 1.0 version will be difficult especially since its current version is 0.0.50.