One of the most notable shifts in sleep technology is the transition from passive tracking to active guidance. Increasingly, consumer sleep trackers are offering AI-driven coaching and personalized recommendations that help users translate data into healthier habits. When thoughtfully implemented, this evolution has meaningful potential to improve outcomes.
But at the same time, there's a valid concern that as sleep tech becomes more advanced, it may also become more prescriptive. The key is to ensure that these tools remain supportive rather than directive, encouraging better sleep quality without fostering pressure, perfectionism, or unnecessary anxiety.
To find the best trackers for most people, I've spoken with experts and tested a ton of wearables, from smart rings and smartwatches to headbands and non-wearable devices. After years of snooze monitoring, these are the favorites.
For more health and wellness tracking, check out our guides to the Best Smart Rings, the Best Smartwatches, and the Best Fitness Trackers.
How I Test Sleep Trackers
Sleep trackers can't diagnose a sleep disorder or replace a clinical sleep study, but the best ones offer reliable data and actionable insights, and are comfortable enough to use overnight. Here's how I test them:
What Am I Testing Next?
I am testing the new Ultrahuman Ring Pro, the RingConn Gen 3, and the Google Fitbit Air. I'm also reevaluating the Whoop MG, the Muse S Athena Headband, and the Withings ScanWatch 2.
Amazon (Ceramic)
Best Buy (Gold)
Of all the fitness trackers I’ve tested, the Oura Ring’s sleep assessment has been one of the most accurate. The ring has a multi-sensor suite: an 18-path multi-wavelength photoplethysmography (PPG) to monitor blood oxygen levels (SpO2), heart rate, HRV, and respiratory rate; a negative temperature coefficient (NTC) thermistor to track body temperature; and a 3D accelerometer that captures movement, including your sleep stages and nighttime restlessness. It tracks factors like total sleep, time in bed, and sleep efficiency on a nightly basis via a time graph, and displays trends on a weekly or monthly basis. Auto-detected naps are also factored into your sleep score, which is a huge bonus. The Oura has been the most comfortable to wear to bed, plus the app is user-friendly. You can view your sleep score, as well as personalized tips on optimizing your bedtime.
Note: You do need Oura’s $6-per-month membership to unlock the more advanced health metrics. Without it, you can only view your sleep, readiness, and activity scores and access recorded meditations. But the subscription is worth it and relatively affordable compared to its competitors.
If you prefer a wristband, the Whoop is a screenless tracker that's more comfortable to sleep with than an Apple Watch. Along with your sleep performance score, it tracks metrics like sleep sufficiency, consistency, and efficiency, which is the amount of time you actually spend asleep. In the app, you can view the number of hours you’ve slept and see how much of that was restorative. It also accounts for your daily activities—what Whoop calls “strain”—to show how much sleep you should ideally be getting. It tracks factors like your wakefulness and respiratory rate, offering resources to build a better nighttime routine and a journal to record the last time you had a cup of coffee or a cocktail that kept you awake.
In testing, Whoop's sleep coach was pretty comprehensive, offering personalized bedtime and wake-up recommendations based on your strain levels. You can toggle on a haptic motor that will wake you with a little wrist-based buzz, although given that the Whoop is screenless, you'll need to double-tap the center of your device or reach for your phone to disable the alarm from the app. Former reviewer Adrienne So also find Whoop to be a little frustrating because it would recommend more sleep than she was capable of getting.
It's worth noting that Whoop membership has three tiers, and to get the new healthspan, ECG, and blood pressure capabilities, you have to pay for the highest Whoop Life tier at $359/year. However, that's about the same price as the original Whoop membership (which was $30 per month), and Whoop throws in the updated Whoop MG for free.
The Eight Sleep Pod 5 is, by far, the best alternative to a wearable I've discovered. It's a mattress cover that not only tracks your sleep but also regulates your temperature. It cools to 55 degrees Fahrenheit and warms to 110 degrees Fahrenheit, with real-time adjustments based on your sleep metrics. If you sleep with your partner, you can set different temperatures on each side of the bed, and it will track each of your sleep patterns independently. The Pod 5 also introduces physical temperature buttons, so you can manually adjust based on personal preference.
When it comes to sleep tracking, the Pod 5 delivers many of the same metrics you'd get from a wearable, including sleep scores, total sleep time, sleep stage breakdowns, HRV, and respiratory rate. Eight Sleep also sends a daily morning text that distills your data into a quick summary, so you don't even need to open the app to see how you slept. There were some discrepancies in the data, especially in the sleep score, compared to the Oura Ring 4, which I consider my gold standard for accuracy, but it's reliable enough if you want to avoid wearables. Plus, if I forget to wear my Oura to bed, I have my Eight Sleep auto-tracking my slumber in the background.
Eight Sleep requires a 12-month commitment to its Autopilot plan. The subscription includes automatic temperature adjustments, sleep reports, software updates, and a vibration and thermal alarm. After 12 months, you can still use the Eight Sleep without the subscription via its manual controls, but you wouldn't have access to sleep reports, which defeats the point.
Google Pixel Watch 4 for $350: I've tested almost every Wear OS smartwatch for Android, and the Pixel Watch 4 is my favorite thanks to its elegant design, excellent accuracy, and compact size. You do need to pay for a Google Health Premium subscription ($10 per month) to see deeper sleep insights and your daily readiness score, though. It does a fair job of tracking naps, though not always, and with any kind of sleep you'll be able to see your sleep stages (awake, REM, light, deep) and even your blood oxygen saturation. All of this data is easily digestible in the Fitbit app, and if you have Fitbit Premium you can see long-term sleep trends, changes in your sleep patterns, sleeping heart rate, and how often you are restless. It's a lightweight watch, so I never found it uncomfortable to wear to bed. —Julian Chokkattu
Apple Watch Series 11 for $399: If you already have an Apple Watch Series 4 or later, you can use it to track your sleep. Between the heart rate sensor and the accelerometer, your Apple Watch can break your slumber down into four stages. Newer models can also measure blood oxygen and temperature. It feels like a general overview compared to some of the other sleep trackers I tried, and there’s no sleep score, though this is obviously by design (it’s debatable whether you need more data).
Garmin Epix Pro (Gen 2) for $1,000: All of Garmin’s fitness trackers track sleep to some extent, but the Epix Pro has what Garmin calls advanced sleep monitoring, or the ability to track sleep stages, your blood oxygen saturation, your respiratory rate, and restlessness. Contributor Adrienne So found that the Epix Pro regularly accounted for her getting a half-hour to an hour more sleep than she actually got most nights, as double-checked by a Whoop and Oura. It also doesn’t add naps to your sleep score.
Google Nest Hub (2nd Gen) for $100: The Nest Hub uses radar to track your sleep, which means you don't need to wear a tracker; it also has a microphone to track snoring, sleep talking, and other nocturnal sounds. I love the Nest Hub on my nightstand for smart home controls, family photos, and listening to sleep sounds or podcasts in bed, but the sleep tracking consistently overestimated my REM phases and missed periods of wakefulness that other trackers recorded. When I used multiple trackers simultaneously, the Nest Hub was the outlier. —Simon Hill
Muse S Athena Headband for $475: This headband has sensors capable of tracking your brain activity, similar to an electroencephalogram (EEG), alongside an accelerometer and gyroscope, and a PPG sensor to measure heart rate and blood circulation. It’s chiefly a meditation aid designed to help you relax, but it can also track your sleep by recording your heart rate, respiration, time to fall asleep, and how much you moved around for an overall sleep score. Sadly, I found it uncomfortable to wear and often woke to discover the sleep tracking had failed, usually because I’d removed it during the night. —Simon Hill
Withings Sleep Tracking Mat for $200: Another alternative to wearables, this sensor-packed mat from Withings slips underneath your mattress where your chest rests. You need to calibrate it during the initial setup, but it’s quick and easy. It tracks your movements, breathing, and heart rate throughout the night, detects snoring or other sounds, and alerts you about potential breathing problems that might indicate sleep apnea. I have doubts about the accuracy as it assumes you are trying to sleep if you are lying still in bed watching TV or reading, and that can skew your score (though it’s best to only use your bed for sleep if you suffer from insomnia). I found it often marked periods of wakefulness as light sleep. It requires a power outlet, but that does mean you never need to worry about charging). —Simon Hill
Withings ScanWatch 2 for $370: Wear the Withings ScanWatch 2 to bed and you will get a sleep score out of 100 in the morning. It covers the same four stages as other trackers (awake, REM, light, and deep) but boasts a PPG sensor for measuring your respiratory rate. It can also track your heart rate, temperature, and blood oxygen levels. The ScanWatch 2 provides a wealth of data and advice in the Withings app. Some folks may find it bulky and uncomfortable for sleep, though, and it had problems distinguishing between light sleep and when I was lying awake in bed. —Simon Hill
Sleep Routine: Tracker & Alarm for $60/year (iOS/Android): Sleep Routine is a sleep-tracking app that provides a report for each night, breaking your sleep into stages. Reviewer Simon Hill says the results were somewhat accurate and broadly matched the Ultrahuman Ring Air, but the app can be a bit wonky. There were frequent occasions where he'd get an error message the morning after with no report or a brief recorded sleep. There was also no indication of why it failed. You can test Sleep Routine for a week before you need to subscribe.
Are Wearables More Reliable Than Contactless Trackers?
Most consumer sleep trackers, whether wearable or contactless, typically analyze movement, heart rate, and respiration to infer how you sleep. In general, these devices do a decent job at measuring sleep duration and overall trends, but accuracy can vary widely from one tracker to another.
“Wearables often capture heart-rate-based signals more consistently, while contactless devices avoid issues like discomfort or forgetting to wear them,” writes sleep scientist and clinician Joseph Dzierzewski in an email. “Neither category matches the precision of clinical sleep studies, especially for sleep staging.”
TL;DR: Both types of sleep trackers are useful for identifying patterns over time, but neither delivers medical-grade accuracy.
What Sleep Metrics Should You Pay Attention To?
According to sleep experts, total sleep time remains the most dependable metric consumer sleep trackers can provide. “It's not perfect, but it tends to be the most stable and actionable,” writes Dzierzewski in an email.
Sleep stage tracking is far less precise. “They're inferring brain states from indirect signals, so misclassification is common,” writes Dzierzewski. While those insights can still be useful for spotting long-term trends, experts caution against reading too much into nightly fluctuations.
Many sleep trackers also condense your data into a single sleep score. While these scores can offer a quick snapshot, the underlying algorithms are often proprietary and lack transparency. “For most people, focusing on consistent sleep timing, total sleep duration, and how rested they feel during the day is far more meaningful than chasing a score,” writes Dzierzewski.
Should You Use a Sleep Tracker?
It’s important to note that there’s no one-size-fits-all set of rules for better sleep. You must listen to your own body, but try not to obsess over it. That said, sleep tracking can be useful. WIRED checked in with the sleep experts for some advice:
Meet the Experts
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Source: Wired
