Life-management app. Not even kidding.

This app is the best thing that has ever happened to me in App of the Week series and I got all Angry Birds and Infinity Blades from there. Its wonderfully, enormously complex and yet so easy to use (once you get used to it, of course).
Tags. WORKING REPEATABLE TASKS. Location-based reminders. Custom repeat times. Lists. And thats only the beginning.
Oh, have I mentioned that its aesthetically pleasing?

Mayome about 2Do - Todo List, Tasks & Notes, v3.5