The Best Sleep Trackers for 2025

To be our best selves, we all know we need have a decent night sleep. Starting with a good nighttime habit can help you to catch the right quantity of sleep. But what defines a night of tossing and turning from a happy eight hours? Sleep trackers could offer some understanding and even guide you to improve your sleeping patterns. Everyone is different, so there is no perfect sleep tracker; nonetheless, we have tried a lot of wearables, from rings and smartwatches to headbands, bedside devices. Years of sleep tracking have led us to these favorites.

A Sleep-Tracking Ring

Oura Ring 4

Among all the fitness trackers I have tried, the sleep evaluation of the Oura Ring has been among the most accurate. The ring's three hospital-grade sensors are a 3D accelerometer for movement, a negative temperature coefficient (NTC) sensor for body temperature, and infrared photoplethysmography sensors for heart rate and respiration. The Oura is usually an average between the two; I use two to three fitness trackers daily.

Using a time graph, it nightly measures total sleep, time in bed, sleep efficiency, and resting heart rate; weekly or monthly tracking provides additional information. It also tracks your REM, light or deep sleep, and restfulness-related variables—whether you wake up or move about too much at night. You may either touch on your sleep snapshot for a fast score or scroll down for advice on optimizing your bedtime by ensuring that the midpoint of your sleep is at the appropriate time for your sleep chronotype (mine is earlier, as I am a morning person) if that is too much information for you. I really appreciate that auto-detected naps increase your sleep score. To access the more sophisticated capabilities, you do require Oura's $6-per-month membership. Without it, you only get access to the logged meditations on the Explore tab and the basic Sleep, Readiness, and Activity scores.

A No-Subscription Ring

Ultrahuman Ring Air

The Ultrahuman Ring Air stood out to me for its accuracy and the useful recommendations in the accompanying app after I tested many sleep trackers concurrently. The ring features a motion-sensing IMU (inertial measurement unit), a PPG (photoplethysmography) sensor, and a medical-grade temperature sensor. Worn for several months, it appears the most accurate of all the gadgets I tested with my sleep stages and duration.

There are charts for heart rate, heart rate variability, and temperature; you may look at your sleep stages in a chart divided into awake, REM, light, and deep sleep. Based on a boatload of variables—including your sleep efficiency, temperature, restfulness, consistency, total sleep, and heart rate drop (an earlier drop in your heart rate allows for greater rest and repair)—the Sleep Index is a score out of 100 for each night’s rest. One aspect I appreciate about the Ultrahuman app is that it will tell you when to stop drinking stimulants like coffee, when to get daylight, and what a decent bedtime window for your circadian rhythm is. Though the recommendations vary from clear to really helpful, every aspect of sleep tracked in the program is accompanied by an insightful description. Technically, the Ultrahuman Ring Air is pretty similar to the Oura, however it is lighter and doesn't need a membership. Although it can monitor activities is well, I found workout recording difficult. As a sleep tracker, I would not hesitate to suggest it.

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A Wristband

Whoop 4.0 (Membership)

Worn in a cloth band one inch above your wrist, the Whoop band is a small, screenless package containing five LED sensors and four photodiodes plus a spinning motor. With a $30 monthly membership ($239 yearly), the Whoop is free and offers you access to some of the most complete biometrics available, including sleep monitoring.

The sleep coach is really thorough. The software lets you click through the hours you've slept to determine how much of it was restorative. It also considers your daily activities—what Whoop refers to as "strain"—to indicate how much sleep you should ideally be getting. It records variables such your wakefulness and respiratory rate, provides tools to create a healthier nighttime routine, and lets you note the last time you had a cocktail keeping you up or a cup of coffee. Though the Whoop has no clear batteries or screens, I usually thrash around for a few minutes every morning half asleep attempting to switch it off. Whoop may be somewhat annoying for me as well since it often advises me to sleep more than I am able. Though my mental health might decline if I stopped consuming all alcohol and coffee and forced myself to bed at 9:30 every night, I know I would physically be better with an hour more of sleep. There are several facets to health.

A Fitness Tracker

Garmin Epix Pro (Gen 2)

Though watches with a Pulse Ox sensor—like the Epix Pro—have what Garmin terms Advanced Sleep Monitoring, or the capacity to track sleep stages, your SpO2 or blood oxygen saturation, your respiration, and restlessness, all of Garmin's fitness trackers track sleep to some degree. The Connect app requests that you specify your Sleep and Wake windows for more precise outcomes; if you own many Garmin devices, including one for cycling or running, you must wear the main one to bed.

Your fundamental sleep score considers the amount of sleep you obtain, stress, and length among other things. Double-checked by a Whoop and Oura, I discovered the Epix Pro often accounted for me obtaining a half-hour to an hour more sleep than I actually had most nights. It doesn't increase your Sleep Score with naps either. Garmin's integration of other biometrics into this quite basic figure, nevertheless, pleased me. Even when every other element remained constant, it was far better than the Oura at identifying when caffeine or alcohol caused my HRV (heart rate variability) more irregular and hence when my sleep was less restful.

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If You Have an iPhone

Apple Watch Series 9

Should you already own an Apple Watch Series 4 or later, you may monitor your sleep with it. Your Apple Watch can split your sleep into four stages using the accelerometer and heart rate sensor. Models more recent can also track temperature and blood oxygen. Apple's strategy, which links in with your iPhone, includes a nightly ritual and sleep goals and can be really beneficial. The catch is you have to sleep with the Apple Watch on.

Sleep tracking on the Apple Watch Series 8 showed my colleague Adrienne So that it was essentially the same with the Series 9 . It did a fair job at indicating my sleep stages (awake, REM, light, and deep sleep). Dig inside the Health app on your iPhone; you can also check time in bed, sleep time, heart rate, respiration rate, and average temperature (though Apple cautions these last two are not meant for medical use). To find trends, you may go back over days, weeks, and months at charts. Apple's Wind Down to assist you in establishing a nighttime routine, the Watch's discreet reminders, and its capacity to softly wake you in the morning (without disturbing your partner) all appeal to me. Apple's graphs are difficult to understand, which is unfortunate, and you cannot go very far into the statistics. Though this is likely by design—it's arguable whether you need more data—there's no sleep score and it seems like a broad summary compared to some of the other sleep trackers I tried. The Health app does offer good recommendations for enhancing your sleep quality. Should you be purchasing something solely for sleep monitoring, it would not be my first choice; if you already own an Apple Watch, you might as well attempt the sleep tracking before thinking about another gadget.

If You Have an Android

Google Pixel Watch 3

Having tried nearly every Wear OS smartwatch for Android, the Pixel Watch 3 is my favorite because of its sleek design, great accuracy, and small size. Unlike the Samsung Galaxy Watch6, every function operates on whatever Android phone you pair it with; however, you must purchase a Fitbit Premium subscription ($10 per month) to get more in-depth sleep analysis and your Daily Readiness score.

Though the Pixel Watch provides a Sleep Score out of 100, my sleep tracking outcomes often matched the Apple Watch Series 9. Though not always, it does a decent job at monitoring naps; with any form of sleep you'll be able to observe your sleep stages (awake, REM, light, deep) and even your blood oxygen saturation throughout the night. The Fitbit app makes all this information simple to consume; if you have Fitbit Premium, you can view long-term sleep patterns, modifications in your sleep patterns, sleeping heart rate, and restlessness frequency. Being a small, light watch, I never found it unpleasant to wear to bed.

An OK Mat for Under the Mattress

Withings Sleep Tracking Mat

Another option to wearables, this sensor-packed mat from Withings fits under your mattress where your chest lies. It's fast and simple, however you have to calibrate it at the first setup. It notifies you of any breathing issues suggesting sleep apnea by tracking your movements, breathing, and heart rate all night; it also finds snoring or other noises.

Once set up, sleep tracking is automatic; data shows in the Withings Health Mate app in a chart split into awake, REM, light, and deep sleep categories. Based on duration, depth, consistency, interruptions, time to fall asleep, and time to rise, it gives each night a sleep score out of 100. For additional information and to observe long-term trends, you may explore particular nights. Though that means you never have to bother about charging, the Withings Sleep Analyzer needs a power outlet. Its accuracy raises questions since it presumes you are attempting to sleep if you are lying still in bed watching TV or reading, which could distort your score; ideally, if you have insomnia, you should only use your bed for sleep. It also indicated frequently light sleep during times of awake.

Your New Favorite

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