Sleep Tracking Accuracy

Comments discuss the accuracy, reliability, and usefulness of sleep tracking features in wearables like Apple Watch, Fitbit, Oura ring, and apps like Sleep Cycle, with recommendations for alternatives and skepticism about wrist-based measurements.

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Keywords

apolloneuro.com TL withings.com accuracy.html livescience.com EUR sleep.cs DR REM WakeMakes sleep tracking sleeping wrist tracker inaccurate band ring wake data

Sample Comments

SirensOfTitan May 10, 2017 View on HN

The Sleep Cycle app does a pretty good job at sleep analysis and gentle waking and you don't have to wear anything.

matthewking Sep 13, 2017 View on HN

Sleep tracking would be one of my primary use cases, how accurate is it? is it useful?

pizza Jun 29, 2017 View on HN

This is related https://www.livescience.com/42710-fitness-trackers-sleep-mon...

vuciv1 Jan 2, 2021 View on HN

Ah, I don't see sleep tracking. Gimme sleep tracking and I'm in!

kerng May 16, 2019 View on HN

The stats imply that it's very inaccurate in tracking sleep phases - you probably know better yourself the day after.

dariosalvi78 Dec 29, 2023 View on HN

Sleep cycles are very hard to measure reliably, basically no wrist worn device should be trusted for that.

fionabunny Nov 7, 2011 View on HN

How does the sleep tracking actually work? How can I verify the measurements?

cozzyd May 29, 2021 View on HN

If you want to track your sleep that doesn't work so well

nunodonato Sep 8, 2020 View on HN

I'm working on a desktop app, so sleep tracking might not be that useful ;)

road_to_freedom Feb 22, 2025 View on HN

Which sleep tracker? Watches aren't accurate.