Do on Time! (Free)

This task scheduler mainly addresses a certain type of long-running tasks. Every now and then you need to do something not so urgent but you can't afford to forget about it: pay the rent, buy a birthday gift, check oil level in your car engine etc. Regular calendar is not very convenient for this kind of tasks because the available time slot can take many days. Neither is alarm clock because you have to reschedule an alarm if you can't do it as soon as it triggers. And it is where this app steps in. You can set the 'not before' and 'not after' dates, and the home screen widget will be letting you know your current status. You may also set up task recurrence as you do in your calendar.

If you want to share tasks with your group of people please check the paid version of this application.