Sleeper: sleep cycle alarm

We sleep in cycles of about 90 minutes. Waking at the end of one shows: you get up without dragging yourself out of bed. Waking in the middle of one shows too. Sleeper tells you when the alarm should ring, and sets it. A DEPARTURE BOARD FOR YOUR NIGHT Pick when you go to bed and Sleeper shows your wake-up times like a station board: each row with its time, its cycles and the hours of sleep. The five-cycle row is lit. It counts 15 minutes to fall asleep, because nobody drops off instantly. ONE TAP AND THE ALARM IS SET Tap a time and Sleeper creates the alarm in the system. The row is stamped ALARM SET, so you never have to wonder whether you already did it. Got it wrong? Tap again and it is gone. WHEN TO GO TO BED Need to be up at 7:00 tomorrow? Give it the time and it tells you when to go to bed. Pick one and it sets the morning alarm and a reminder to head to bed. 12 OR 24 HOURS, LIKE YOUR PHONE Times show in the format you already use. And if you have system animations turned off, the flaps change without flipping. PRO, ONE PAYMENT A 20-minute power nap or one full cycle. Your own rhythm: how long you take to fall asleep and how long your cycle lasts. And a home screen widget with tonight's bedtimes. One payment, forever. No subscription. YOUR DATA STAYS ON YOUR PHONE No account, no email, no ads and no tracking. Sleeper does not use the microphone or the sensors, and needs no internet to work anything out. WHAT IT IS NOT Sleeper does not measure your sleep and is not a medical device. It does one simple sum, properly, and turns it into an alarm.