A free app for Android, by Atypical Apps.

Sleep Debt Tracker – Automatic is an alarm clock app that will help you get more sleep. When you’re tired, you don’t want to wake up and you need to be asleep to feel refreshed. But you can’t just stay in bed all day and night, can you? It’s time to get up and do something to relieve your tiredness.

So, the app will detect when you’re asleep and will also calculate how much sleep you got that night. So you can understand how much sleep debt you have and how much sleep you need to get rid of the tiredness. You can set a goal for how much sleep you want to get every night.

What’s more, it’ll tell you what time you should go to bed. You can turn on notifications to be woken up at a certain time. So, you won’t need to buy an expensive fitness tracker to keep track of your sleep quality.

This is a great app for students, shift workers, pilots, train drivers, truck drivers and the like.