SleepCycle

Wake up feeling refreshed with SleepCycle - your smart sleep cycle calculator! Based on the idea that sleep runs in ~90-minute cycles, the app helps you time your sleep so you wake up during light sleep - when getting up feels easiest.
Use Sleep now to see when to set your alarm if you fall asleep right away, or Wake up at... to get a list of the bedtimes for your target wake-up time. Each option shows the number of cycles and total sleep duration (e.g., 5 cycles - 7 h 30 min), with recommendations marking the choices and warnings for nights that are too short. Fine-tune your plan with +15 min adjustments and copy the time you need in one tap.
With a clean, intuitive interface and clear explanations, SleepCycle helps you build a smarter bedtime routine. Note: this is an educational tool, not medical advice. Start sleeping smarter today!