Apple
Apple Watch sleep tracking combining sleep stages, overnight vitals, sleep score, and supported sleep-apnea notifications inside the broader Apple Health ecosystem.
What they're known for
A general-purpose smartwatch that increasingly treats sleep as a first-class health signal rather than a secondary fitness metric.
Apple Watch tracks sleep duration and estimates REM, Core, and Deep sleep stages while recording overnight signals such as heart rate, respiratory rate, wrist temperature, and HRV through the Vitals and Health apps. watchOS 26 added a Sleep Score built from duration, consistency, awakenings, and sleep-stage data, while supported watches can also track breathing disturbances and notify users of patterns associated with moderate-to-severe sleep apnea. The advantage is integration: sleep data sits beside workouts, medication, cardiovascular, and other longitudinal health records rather than living in a standalone sleep app.
In the directory
2 products
Apple Watch Ultra 3
The current-gen Apple Watch Ultra with a new sleep score, hypertension notifications, 5G connectivity, satellite SOS, and the longest battery life Apple has ever shipped in a watch. Clinical-grade sleep staging, blood oxygen, wrist-temperature trends, and HRV feed directly into the Health app. Doubles as a serious training computer — the strongest single-device choice for people who want sleep and fitness in one.
Apple Watch Series 11
Apple's mainline smartwatch for people who want the health and sleep tracking without the Ultra's ruggedized size or price. Series 11 adds hypertension notifications, the new sleep score, refined HRV and wrist-temperature trending, and always-on 5G. Better fit for sleep tracking than the Ultra thanks to the lighter case, and still pulls everything into the Health app for long-term trend analysis.
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