Good Time — Sleep Calculator helps you to wake up feeling fresh and energetic every morning by calculating time to go to bed & time to wake up.

* Find your best time to wake up if you get in bed right now
* Select when you want to wake up and calculate your time to go to bed
* Set a kind reminder not to forget planned bedtime
* Get sleeping tips

Algorithm is based on a common knowledge that average sleep cycle lasts about 90 minutes.