Sleep Cycle
Verified working Aug 19, 2026
A phone-based sleep tracker focused on rhythm, quality, and wake timing.
Sleep Cycle is a mobile app for monitoring sleep patterns and helping users build more consistent rest habits. It analyzes nighttime sound, summarizes sleep with a score based on duration, quality, and routine, and includes a smart alarm aimed at gentler wake-ups.
Why it stands out
- Emphasizes sleep regularity, not just total hours, reflecting newer research cited by the company.
- Uses a large historical dataset of sleep sessions to inform its sleep analysis approach.
- Does not require a wearable device for its core tracking method.
- Combines sleep tracking with a wake-up alarm workflow, so it fits into a nightly routine rather than being only a dashboard.
Good to know
- The main tracking method is phone-based sound analysis, not a clinical sleep study or direct physiological measurement.
- The page promotes a free trial/free summer offer, so continued use may involve a subscription after the promotional period.
- Its scoring model centers on duration, quality, and routine; users seeking broader medical or fitness metrics may need another tool alongside it.
Photos

People trying to stabilize irregular sleep schedules can use it to track nightly patterns and build a more consistent routine. Review sleep quality trends after stressful weeks, travel, or schedule changes. Use the smart alarm to wake during a lighter sleep window instead of a fixed alarm time. Track whether bedtime and wake-time consistency improves over time.
Phone-based sleep tracking using sound analysis; Sleep Score organized around duration, quality, and routine; trend views for consistency; smart alarm; iOS and Android app availability; sleep education content and an optional sleep test on the website.
Alternative listings
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