Getting enough sleep is essential for both physical and mental health. Consistently missing out on rest has been linked to low mood, reduced concentration and a higher risk of illness. Yet many people struggle to get enough sleep. According to Mental Health UK, adults should aim for between seven and nine hours a night, but around one in five don’t reach that target.
Sleep trackers can help by giving you a clearer picture of your sleep habits. By monitoring factors such as movement, heart rate and breathing patterns overnight, these devices estimate how long you sleep, how restful that sleep is and how your routine changes over time.
Most sleep trackers are wearable devices such as watches or rings, although there are also non-wearable options available, including sensors that sit discreetly underneath your mattress.
To find the best options, we tested a range of popular sleep trackers in everyday conditions. Each device was paired with a smartphone and used for several nights to assess comfort, usability and how clearly it presented sleep data, as well as the usefulness of additional features such as fitness tracking and health insights.
For more advice, explore Good Food’s guides on how to sleep better, how to get to sleep and how to get up early in the morning.
How we tested sleep trackers
Each sleep tracker in this guide was tested in everyday (or every evening!) conditions, just as you would use it at home. We paired each device with our personal smartphone and wore or used it for at least five nights, and often longer. During testing, we looked at how comfortable the tracker was to wear overnight, how clearly the data was presented and how closely the recorded sleep and wake times matched our actual routine.
Because sleep tracking accuracy can vary between devices, we focused particularly on how consistently each tracker recorded sleep and wake times, how clearly the data was explained in the companion app, and whether the insights were genuinely useful in understanding and improving sleep habits.
Setup, battery life, design, charging requirements and the usability of the companion app were all considered as part of the overall experience. Many trackers also include additional health and fitness features, so where relevant we tested these too by recording workouts such as runs, tennis, yoga and pilates, and by monitoring metrics like step count, resting heart rate and menstrual cycle tracking. For smartwatch-style devices, we also evaluated notifications, music control and navigation to see how well they worked alongside sleep tracking.
All devices were tested independently in real-world conditions rather than controlled lab environments, so our focus was on the practical experience of using each tracker day to day.
Best sleep trackers at a glance
- Best sleep tracker overall: Oura Ring 4, from £349
- Best sleep tracker for iPhone users: Apple Watch Series 10, £349
- Best sleep tracker for fitness: Garmin Venu 3, £369.99
- Best sleep tracker for Android phone users: Google Pixel Watch 3, £199
- Best affordable sleep tracker: FitBit Versa 4, £128.99
- Best sleep tracking ring without a subscription: Samsung Galaxy Ring, £299
- Best non-wearable sleep tracker: Withings Sleep Analyzer Mat, £129.95
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Best sleep trackers to buy 2026
Oura Ring 4
Available from Amazon (£290.83), John Lewis and Partners (£329), Healf (£347.58), Oura (from £349)
Best sleep tracker overall
Star rating: 4.5/5
Pros:
- Accurate sleep tracking with practical advice on how to improve
- The battery lasts up to eight days
- Wide range of health insights, including menstrual cycle tracking, cardio capacity, a readiness score
Cons:
- Activity tracking is less comprehensive than on a smartwatch
- The ring can pick up scratches with regular wear
The Oura Ring 4’s comfortable design, detailed insights and helpful guidance make it the best sleep tracker overall.
Each morning I received a detailed sleep report in the app, including an overall sleep score, time asleep, sleep efficiency and time spent in each stage of sleep. In my testing, the sleep and wake times closely matched my routine, and the nightly reports made it easy to see how habits such as late meals or caffeine affected my rest. I also liked being able to add tags, such as alcohol or exercise, to help explain changes in my sleep data.
The ring tracks other health metrics too, including resting heart rate trends, cardiovascular age and menstrual cycle insights. While I could log activities, it wasn’t as intuitive for workouts as a smartwatch and lacks real-time exercise tracking.
It’s lightweight and comfortable enough that I rarely noticed it overnight, and the battery lasts up to eight days. Just bear in mind that many of the most useful insights sit behind a monthly subscription.
undefinedApple Watch Series 10
Available from Amazon (£317.03), Very (£349), Argos (£429), John Lewis and Partners (£449)
Best sleep tracker for iPhone users
Star rating: 4.5/5
Pros:
- Detailed sleep tracking with results on both the watch and the app
- Includes sleep apnea detection
- Durable and stylish design
Cons:
- Battery lasts up to 18 hours
- Requires an iPhone with iOS 18 or later
I found the Apple Watch Series 10 to be one of the most versatile options, great for iPhone users who want to track sleep alongside health and fitness.
It records key sleep metrics such as duration and time spent in different stages, and I liked that I could check the results directly on the watch without opening the app. The data is shown in clear graphs, making it easy to spot patterns over time. Features like Sleep Focus were also useful during testing, dimming notifications and simplifying the lock screen to help reduce distractions before bed.
Battery life is the main limitation. It lasts around 18 hours, so I needed to charge it daily, but I found an eight-minute top-up before bed was usually enough to get through the night.
Beyond sleep tracking, the Apple Watch Series 10 doubles as a full smartwatch. I used it to track workouts, including swimming, as well as take calls, make contactless payments and quickly locate my iPhone when needed.
undefinedGarmin Venu 3
Available from Amazon (£290), Garmin (£369.99), Argos (£379.99)
Best sleep tracker for fitness
Star rating: 4.5/5
Pros:
- Detailed sleep tracking with body battery, sleep coach and sleep scores
- Stylish, sturdy and comes in two sizes (41mm or 45mm)
- Up to 14 days of battery life
Cons:
- Not as comfortable to wear as some other trackers
- It’s expensive if all you need is sleep tracking
When I tested the Garmin Venu 3, what stood out most was how much context it gave around sleep. Rather than just showing how long I slept, it combined that data with activity and stress levels to give a fuller picture of recovery.
The watch tracks sleep duration, movement during the night, sleep stages and heart rate, then summarises everything into a sleep score each morning. I also found the sleep coach helpful, as it offered suggestions based on my recent sleep patterns. Another standout feature is Garmin’s Body Battery score, which uses sleep, activity and stress data to estimate how much energy you have throughout the day.
Beyond sleep tracking, the Venu 3 works as a powerful fitness watch. It supports more than 30 sports and workouts, includes built-in GPS and even has activity tracking designed for wheelchair users.
Battery life is excellent too, lasting up to 14 days between charges. However, if sleep tracking is your main priority, it may feel more advanced (and more expensive) than necessary.
undefinedGoogle Pixel Watch 3
Available from Amazon (£199), Currys (£199), Argos (£239)
Best sleep tracker for Android phone users
Star rating: 4.5/5
Pros:
- Accurate, easy-to-understand sleep tracking data
- Daily cardio load and readiness score
- Tracks 40+ exercises and workouts
Cons:
- Limited guidance on how to improve your sleep
- The battery typically lasts up to 36 hours
Android users who want a smartwatch that doubles as a sleep tracker should consider the Google Pixel Watch 3. It comes in two sizes (41mm or 45mm) and a range of band colours, and during testing it felt both comfortable to wear overnight and stylish enough for everyday use.
When I fell asleep, the watch automatically switched to Bedtime Mode and tracked sleep duration, stages, resting heart rate, restlessness and oxygen variation. It also recognised when I took longer daytime naps, which helped give a fuller picture of my sleep habits.
The watch works with the Fitbit app, which I found simple and easy to navigate. It provides an overall sleep score and lets you compare trends over time. With a Fitbit Premium subscription (£7.99 per month), you also get more detailed insights, including a personalised sleep profile. That said, I would have liked clearer guidance on exactly how to improve the results.
undefinedFitbit Versa 4
Available from Amazon (£128.99), John Lewis and Partners (£129.99), Argos (£129.99), Currys (£179.99)
Best affordable sleep tracker
Star rating: 4/5
Pros:
- Easy to compare nightly, weekly, monthly and yearly sleep data
- The battery lasts six days or more
- Includes wide range of fitness tracking features
Cons:
- Google Assistant has been removed from the device
- A paid subscription is required for some sleep tracking features
During testing, the Fitbit Versa 4 made it particularly easy to spot patterns in my sleep over time. The Fitbit app clearly compares nightly results with weekly, monthly and even yearly trends, which helped me see how my routine was affecting my rest.
Each morning I could check how long I’d slept and how much time I’d spent in each stage. The watch also uses overnight data alongside your activity levels to generate daily readiness and cardio load scores, which give a useful indication of how prepared your body is for exercise.
Battery life was another highlight. I consistently got around six days of use between charges, which is noticeably longer than most smartwatch-style trackers.
The Versa 4 also functions as a smartwatch, with phone notifications, contactless payments and Amazon Alexa support. However, Google Assistant is no longer available, and some of the more detailed sleep insights require a Fitbit Premium subscription (£7.99 per month).
undefinedSamsung Galaxy Ring
Available from Samsung (£299), Currys (£399)
Best sleep tracking ring without a subscription
Star rating: 4/5
Pros:
- All features come with the ring, no membership required
- Up to seven days of battery life
- Very accurate sleep tracking
Cons:
- It’s not compatible with iPhones
- You need a Samsung Galaxy phone for features like Gesture Control
What immediately sets the Samsung Galaxy Ring apart is that everything is included upfront. Unlike some other sleep trackers I tested, there’s no monthly subscription required to access the full range of features.
Each morning I could review detailed sleep insights, including precise sleep and wake times, sleeping heart rate, time spent in each sleep stage and overnight skin temperature. The data is summarised in a simple sleep score and the app makes it easy to compare daily results with weekly, monthly and longer-term trends. I also liked the built-in sleep coaching tools, which suggest ways to improve your habits over time.
The ring focuses more on overall wellness than serious fitness tracking. I could log workouts, but the tracking isn’t as detailed as on dedicated fitness watches.
It’s also worth noting that the Galaxy Ring only works with Android phones and some features, such as gesture controls, are limited to Samsung Galaxy devices.
undefinedWithings Sleep Analyzer Mat
Available from Healf (£128.49), Withings (£129.95), Boots (£129.95)
Best non-wearable sleep tracker
Star rating: 3.5/5
Pros:
- Stays permanently under your mattress
- Detects sleep apnea and snoring
- Provides a daily sleep score with weekly and monthly trends
Cons:
- Not as accurate as wearable trackers
- Takes a few nights to position correctly
The Withings Sleep Analyzer takes a completely different approach to sleep tracking. Instead of wearing a device on your wrist or finger, the slim sensor mat slides underneath your mattress. It covers roughly half the width of a double bed, so it works well for one person in a shared bed, or for a single sleeper.
It took me a couple of nights to position the mat correctly during testing, but once it was set up it ran automatically without needing to be worn or charged. Each morning the app showed my sleep duration, time spent in different stages, interruptions during the night and the consistency of my sleep schedule. It can also detect signs of sleep apnea, monitor heart rate trends and track snoring.
The app offers advice on improving sleep, although I found it slightly less intuitive than some wearable apps in this list. The sleep tracking was also a little less consistent than the wrist-based trackers I tested.
undefinedHow do sleep trackers work?
Sleep trackers measure the quality and duration of your sleep using a combination of different technologies, such as a heart rate sensor, an accelerometer to track movements, a gyroscope to measure rotation, and occasionally a microphone.
Using the data it collects overnight, the tracker can detect when you are awake and when you’re asleep, analysing your sleep cycles, including how long you spend in each sleep stage (awake, light, REM and deep sleep).
Every sleep tracker on this list comes with an accompanying smartphone app where you can see useful graphs and statistics about each night. Most will have a sleep score to help you understand how effective your rest was. Some trackers allow you to compare your sleep to the rest of the week, month, or year, so you can see how it changes over time. Others provide straightforward advice on how to improve your sleep, like suggesting an earlier bedtime, more consistent wake times or offering guided meditations to help you unwind in the evening.
How accurate are sleep trackers?
Sleep trackers are increasingly popular and can offer useful insights into your sleep habits, routines and general patterns. However, it is important to understand their limitations and not treat them as medical devices.
Most consumer sleep trackers work by monitoring movement, heart rate and sometimes skin temperature to estimate when you are asleep and which sleep stages you might be in. These readings are based on algorithms that interpret changes in your body and activity, but they are ultimately just estimates. Environmental factors, how tightly the device fits and even how often you move during the night can all affect the accuracy of the data. As a result, while sleep trackers can give you a rough idea of how much sleep you are getting and how long you might spend in different stages, they cannot provide a definitive or medically precise record of your sleep.
If you consistently wake up feeling tired despite your tracker suggesting you are getting 'good' sleep or if you struggle with ongoing issues such as insomnia, anxiety around sleep or symptoms of sleep apnoea, it is important to seek advice from a GP or sleep specialist. For precise sleep tracking, you’d need to be hooked up to a polysomnograph, which records brain waves. Sleep trackers are not able to diagnose or rule out medical conditions.
Another consideration is the risk of becoming overly focused on the numbers your tracker provides. This can lead to a condition known as orthosomnia, where the pursuit of perfect sleep data actually increases anxiety and can make sleep problems worse.
In summary, sleep trackers can be a helpful tool for spotting trends, making small adjustments to your habits and encouraging better sleep hygiene. They are best used as part of a wider approach to improving sleep, rather than as a substitute for professional advice or medical assessment. For anyone needing precise information about their sleep, a clinical sleep study using equipment that measures brain activity would be necessary, but this is not practical or necessary for most people. If you have concerns about your sleep or are not feeling rested, it is always best to consult a healthcare professional.
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source https://www.bbcgoodfood.com/review/best-sleep-trackers-reviewed
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