Sleep Timer Plus- Smart alarm clock

Try to imagine that a sleepy person how can he listen to the teacher in class or work in their position. It must be a hard job or in low efficiency. If a person sleep enough, he can do better in their life.
Sleep on time is a simple habit,but it's difficult for most people.
This app will remind you to sleep for free , Help you break the bad habit of staying up late and have a health life.