The wonderful Wunderlist for Android (pictures)

Creating a task is as easy as tapping the field at the top of the screen. By default, Wunderlist keeps completed items onscreen for you to keep track of, but you can easily hide them with a single tap.

Some tasks are a little more complex than just, "Pick up the dry cleaning." For these cases, Wunderlist offers subtasks, which can be created from within the Details screen of any task.

The sliding panel on the left houses all of your lists and Smart Lists.

Paying Pro subscribers get extra backgrounds and the power to assign tasks to collaborators. With the option to attach files on the way, this premium account type surely has potential, but at this point, it looks like a tough sell.

Optimized for tablets, Wunderlist is shown here with its two-panel, landscape interface.