I wasted two bucks on this. Gmail task manager is free and better than this. From the screenshots it looked more robust. The only good thing about this is that you can see a list of topical lists to the left. The app wont allow you to prioritize or reorder the lists. Nor will it allow you to move tasks to the top of the list. When I have a todo list, many times I need to do certain tasks first. List Keeper doesnt permit this. Last in, first on top is the only option. If you want a simple list maker, juse a free app or buy a better application.