Comment on Ask HN: What's the best sleep tracking device?Comments−brlewis7yDisclosure: #FitbitEmployee but I don't speak for Fitbit.Any Fitbit with heart rate will give you maximum acccuracy according to https://www.wareable.com/fitbit/fitbit-sleep-tracking-defini...Heart rate is key to getting good sleep stages data, so a non-wearable won't do. https://blog.fitbit.com/heart-rate-during-sleep-stages/To integrate with Apple HealthKit you need a 3rd party app.
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Disclosure: #FitbitEmployee but I don't speak for Fitbit.
Any Fitbit with heart rate will give you maximum acccuracy according to https://www.wareable.com/fitbit/fitbit-sleep-tracking-defini...
Heart rate is key to getting good sleep stages data, so a non-wearable won't do. https://blog.fitbit.com/heart-rate-during-sleep-stages/
To integrate with Apple HealthKit you need a 3rd party app.