It is easy to use intuitively and is a good listing Todo list.
Since you can decompose the tasks (tasks) into lists, you can enter things to do first, break down them into little tasks and organize the plans. It is easy, so you can understand the operation intuitively by touching it.

++ Function
· Register Task (Todo)
· Add subtask to task and register
· Task classification
· Set deadline date for task
· Task notification