Sleepr is founded on the idea of sleep cycles. There are four stages of sleep cycles and the best time to wake up is at the end of a cycle. If you wake up in the middle of the cycle, you will likely feel tired. In gereral, the sleep cycle lasts 90 minutes and Sleepr makes 90 minute subtractions/additions so you can quickly determine when you should go to sleep or when you should wake up to get as reasonably close as possible to waking up at the end of a cycle.
- Easy sleep cycle calculations
- Awesome time picker (supports keyboard)