Don't waist your time in order to manage the ToDo List.
Use this super simple ToDo list app.
Simple is best!

You can't miss the tasks to do because the unchecked tasks are listed up today's section automatically.
Completed tasks are sorted out automatically with checked dates. It looks like the work history.
The maximum number of tasks is 1,000 in the current version. When the number exceeds 1,000, the completed tasks are deleted from the older one.