SleepWindow

SleepWindow helps you work backwards from your wake-up time to find better bedtimes.

Choose the time you want to wake up, and SleepWindow calculates three bedtime options based on 6, 5, or 4 sleep cycles, with a small allowance for the time it takes to fall asleep. The goal is simple: make it easier to wake at the end of a cycle instead of in the middle of one.

Features: • Live bedtime recommendations from your chosen wake-up time • Support for 12-hour and 24-hour time formats • Adjustable time-to-fall-asleep setting • Home Screen widget showing your selected bedtime • Simple explanation of the sleep-cycle concept • No accounts, no tracking, no data collection

SleepWindow keeps the calculation clear and lightweight, so you can set your alarm and see when to head to bed.