A simple website that calculates the best time to go to sleep based on when you need to get up, in order to help you feel more refreshed in the morning. uses the theory of sleep cycles to give a selection of bedtime options that will help you to wake up during a light sleep phase and feel more awake during the day. 

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sleepytime screenshot



  • Free
  • A simple alternative to sleep-tracking
  • Easy to use


  • Only an approximation
  • Not personalised
  • No other features
  • Ineffective if you struggle to get to sleep