Use Sleep Calculator to find the best time to go to bed or wake up based on 90-minute sleep cycles. Calculate REM sleep, ideal sleep time, and wake up refreshed.
Cost / License
- Free
- Proprietary
Platforms
- Online

Bedtime Clock is described as 'The Best Clock and Parents and Kids. The All-in-one alarm clock takes care of everything you need for a good nights sleep' and is a Alarm Clock in the online services category. There are more than 25 alternatives to Bedtime Clock for a variety of platforms, including iPhone, Android, iPad, Android Tablet and Web-based apps. The best Bedtime Clock alternative is Sleep as Android, which is free. Other great apps like Bedtime Clock are Alarm Clock Svegliare, Sleep Cycle Alarm Clock, Alarmy and Sveglia - Ultimate Alarm App.
Use Sleep Calculator to find the best time to go to bed or wake up based on 90-minute sleep cycles. Calculate REM sleep, ideal sleep time, and wake up refreshed.
