sleep tracking accuracy

Sleep tracking is one of the strongest-reviewed areas, with reviewers praising wake detection, detail, and overall accuracy.

Sleep tracking was described as dependable at identifying sleep and wake times, with one review saying Apple is outstanding at detecting when you fell asleep and woke up.

Reviews say sleep tracking aligns reasonably well with comparison devices and remains one of the stronger parts of the Apple Watch experience.

Sleep tracking was one of the stronger features overall, though a few reviewers still saw overestimation or occasional misreads.

Sleep tracking is mixed: some reviewers found it impressive or accurate for naps and sleep windows, while others saw lingering issues with wake time and core sleep stats.