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It can be worth buying if you want sleep tracking without wearing a device overnight, your bed is compatible, and the features offered in your region match what you need. The Withings Sleep Analyzer sits under the mattress and sends sleep metrics to the Withings app. Its apnea-related features vary by market, and its readings are not a medical diagnosis.
What the Withings Sleep Analyzer does
The Withings Sleep Analyzer is a sensor pad that goes under your mattress. It tracks sleep duration and timing, estimates light, deep, and REM sleep phases, monitors heart rate, records snoring duration, and provides a sleep score. In supported markets, it also reports apnea episodes with a severity classification. Data syncs to the Withings app over Wi-Fi.
Withings says the pad uses pneumatic measurements of breathing, heartbeat, and body movement; a built-in sound sensor identifies snoring-related audio patterns. Unlike a watch or ring, it does not need to be worn, but it is a sleep-focused device rather than a way to track daytime activity.
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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Does it detect sleep apnea?
That depends on the product and your region. Withings describes the Sleep Analyzer as its EU/ROW model with sleep apnea detection, while the separate US Sleep product reports breathing disturbances. These are not interchangeable feature descriptions: check the exact model and local product information before buying if apnea-related reporting is important to you. Withings explains the product distinction here.
#1 Best Overall
- EXPLORE THE DEPTHS OF YOUR SLEEP PATTERN - Sleep is the ultra-powerful sleep monitor that allows you to detect snoring, analyze your sleep, proactively monitor your heart rate and much more.
- WORLD PREMIERE - Sleep is the world's first under-mattress sleep sensor, with revolutionary features.
- LEADS TO MORE RESTFUL SLEEP - By analyzing the phases, depth and interruptions of your sleep, you can learn more about your nights and receive advice on how to improve your sleep.
- SNORING DETECTION - Sleep can automatically detect any snoring episodes, which can lead to sleep disturbances.
- ANALYZE YOUR CARDIOVASCULAR HEALTH - Every time your heart beats, it propels a mechanical wave through your body, systematically measured with great precision by the pneumatic sensor.
A July 2026 Withings announcement about a prospective Flinders-led study published in npj Digital Medicine reported 86% sensitivity and 90% specificity for multi-night detection of moderate-to-severe obstructive sleep apnea compared with in-home polysomnography. The final analysis included 92 of 100 enrolled adults. Those figures describe performance in the study population and against that comparator; they do not show that the pad can diagnose an individual or replace clinical assessment. Withings said it supplied devices and partially funded a research assistant, but did not take part in study design, data collection, analysis, manuscript preparation, or the publication decision. Read Withings’ announcement.
Withings advises users whose results suggest possible apnea to consult a doctor, who can determine what evaluation or treatment is appropriate. Treat the device’s reports as information to discuss with a healthcare professional, not a diagnosis.
Rank #2
- 【Non-Wearable Sleep Tracking for Better Rest】SOMNDEEP sleep monitor device uses 60GHz millimeter-wave radar to help track sleep routines contactlessly and quietly. With no skin contact and no tight wearables, it offers a gentle, comfortable option for adults, seniors, users with sensitive skin, a wide range of body types, and anyone who wants to understand sleep habits without disrupting natural rest.
- 【Plug In Once, Track Every Night】 Unlike wearable sleep trackers that require charging, wearing, or bedtime pairing, SOMNDEEP contactless sleep tracker is designed for simple plug-in use and automatic nightly tracking. It helps reduce missed data caused by forgotten wearables, low battery, or uncomfortable devices, giving you a more effortless way to follow your sleep routine.
- 【Complete Sleep & Wellness Insights】 Review sleep duration, body movement, restlessness, breathing pattern trends, heart rate, and sleep stage insights such as deep, light, and REM sleep. Compare daily reports and long-term trends to better understand your sleep patterns, adjust your daily routine, build better sleep habits, and support a healthier lifestyle over time.
- 【No Camera Radar Sensing for Privacy】 SOMNDEEP sleep tracker device uses radar-based sensing instead of a bedroom camera, so it does not record images or video. The private, contactless design helps capture sleep-related movement and routine trends while keeping your bedroom experience discreet, quiet, and comfortable.
- 【Easy App Reports & Clear Sleep Trends】 Sleep reports are automatically uploaded to the app via stable 2.4GHz Wi-Fi and shown in simple, easy-to-read charts. View daily sleep data, compare long-term trends, and understand changes in your sleep quality without complicated setup, making it easy for seniors and users who are not very tech-savvy.
Will it work with your mattress and bed?
Withings lists spring, foam, and latex mattresses as supported. It excludes waterbeds and air mattresses. The sensor must make full contact with both the mattress and the bed platform, so an unusual frame or mattress arrangement is worth checking against the official product information before purchase.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errors- Place the sensor sideways under the mattress, at chest or heart level.
- Make sure it touches both the mattress and platform. For a slatted frame, Withings advises placing a flat, sturdy object between the frame and sensor.
- Connect it to power; a USB adapter is included.
- Allow at least five hours of sleep for results, according to Withings.
Setup, phone, Wi-Fi, and subscription requirements
Installation requires Bluetooth, and the device uses Wi-Fi to sync data to the Withings app. The current UK product page specifies iOS 18 or later or Android 12 or later and says setup cannot be completed on a computer. Requirements may differ by country or change, so check the local listing if your phone is older or you do not want a phone-based setup.
Rank #3
- 【Non-Wearable, 100% Comfortable】Monitor your sleep with a smart sleep monitor—no wearables or cameras required. Powered by safe millimeter-wave radar technology, it’s perfect for anyone who prefers a comfortable, non-wearable experience. Enjoy private, comfortable monitoring with no physical contact and no visual recording.
- 【Complete Sleep & Wellness Tracking】Track your heart rate, breathing patterns and body movements in real time with this bedside sleep monitor. Accurately measure the percentage of deep, light, and REM sleep. Compare daily data and monitor long-term trends to see how your sleep quality changes. Stay updated on your sleep patterns for a better understanding of your overall wellness.
- 【See How Daily Activities Impact Your Sleep Quality】Our non-contact sleep tracker lets you observe how daily activities may affect your sleep cycles. Use daily in-app notes to log daily routines for long-term trend tracking of your sleep patterns. This data is for personal reference only.
- 【Gentle Reminders for Better Daily Routine】Set routine and supplement reminders or record personalized voice messages with your smart sleep monitor. Ideal for caregivers, families, or anyone who needs a little extra help staying on top of important tasks.
- 【Clear, Actionable Reports】View easy-to-understand reports about your sleep quality with the sleep monitor. Track long-term trends, better understand your daily habits, and receive helpful lifestyle suggestions to support better sleep quality and a more consistent routine. (Not for medical use.)
Withings says sleep history and trends are available without a subscription; Withings+ is optional. Its UK listing also describes online storage as free and unlimited. Subscription offers and product terms can change, so confirm the current details for your market.
Who is it worth buying for?
- You do not want to wear a tracker to bed. Once installed under a compatible mattress, the pad can record overnight without a wearable.
- You want sleep trends rather than daytime tracking. It reports duration, timing, sleep phases, heart rate, snoring, and a sleep score through the app.
- You want apnea-related information to discuss with a clinician. This is relevant only if the model available in your region includes the feature you expect, and it should be used as supplementary information.
Who should skip it?
- Your bed is incompatible. Waterbeds and air mattresses are excluded, and the sensor needs the prescribed contact with the mattress and platform.
- You need one device for day and night. This is a sleep tracker, not a daytime activity tracker.
- You need a diagnosis or guaranteed apnea detection. The device does not replace a clinician’s assessment, and apnea-related functions vary by market.
- Your phone or setup preferences do not fit. Check the local app requirements and be prepared to use a compatible phone for installation.
Price and availability
At the time of checking in 2026, the official UK product page listed the Withings Sleep Analyzer at £99.95 and showed it in stock, with a two-year quality guarantee. Price and availability can vary by market and change over time; check the current local listing rather than treating that UK price as universal. Check the UK product page.
Rank #4
- 【Real-time body movement change monitoring】Record every tiny movement change, and can monitor the number of times you leave the bed, the length of time you fall asleep, and the number of times you turn over.
- 【Sleep quality monitoring and management】Through various indicators and comprehensive intelligent AI algorithm analysis, it provides sleep state analysis, such as deep sleep, light sleep, and awake state.
- 【Sleep reporting and analysis】The intelligent sleep analysis report can intuitively display sleep parameters and provide effective sleep suggestions.
- 【Heart rate variation analysis】Heart rate variability can be analyzed through heart rate monitoring throughout the night, so as to have a deeper understanding of their physical recovery status and stress index, quantify sleep indicators, and improve physical and mental health.
- 【Sleep report】Sleep quality monitoring and management Through the comprehensive intelligent analysis of various indicators such as breathing, heart rate and body movement, it provides analysis of sleep states such as deep sleep, light sleep, REM and awake state
How to decide
Buy it if an under-mattress sensor is more appealing than a wearable, your mattress and frame meet the placement requirements, and the Withings app and local model provide the metrics you want. If apnea reporting is the deciding factor, verify the exact regional product before checkout and plan to discuss concerning results with a doctor. If you want daytime tracking, use of a computer-only setup, or a medical diagnosis, this product does not meet that need.
Quick Recap
Best Value
- NO WATCH, NO RING, NO CAMERA: OZI Sleep slides under your sheet to track overnight sleep patterns without a watch, ring, wristband or camera in the room. Just sleep normally and let OZI do the tracking
- TRACK THE SLEEP DATA THAT EXPLAINS YOUR NIGHT: View sleep stages, heart rate, breathing rate, movement, awake moments, sleep duration, time to fall asleep and your nightly Sleep Score in the OZI app
- REAL-TIME ALERTS FOR FAMILIES AND CAREGIVERS: Receive notifications for bed exits, unusual movement or changes in heart rate and breathing patterns, helping you stay informed without constant room checks
- EASY SETUP WITH NO MONTHLY SUBSCRIPTION: Place the sensor under the sheet, connect the app and start tracking in minutes. No monthly fees, no cameras and no wearable device to charge
- BUILT FOR ADULTS, KIDS 5+, COUPLES AND HOUSEHOLDS: Use OZI for your own sleep, a child, a partner, an older parent or anyone who wants better sleep visibility without wearing a watch or ring
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
