A free app for Android, by Netigen Unicorn.

You’re tired and have a headache, but you still have to get up and go to work. You can’t sleep because your mind is busy and you need to solve a lot of math problems. This is very stressful, and you need a rest. But you have no time to rest because you need to get up so early. You feel like you’re not getting any rest and you’re always exhausted. 

What can you do in such a situation? You can use a sleep aid or a sleep pillow. But this will not help you if you have to stay up all night to catch your breath. It’s time to try Unicorn Alarm Clock.