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The Withings Sleep Analyzer is a powered sensor mat that sits under your mattress and tracks sleep without requiring you to wear a watch or ring. It can report sleep timing and stages, heart-rate and snoring information in the Withings app; apnea detection is a separate feature whose availability and regulatory status depend on your country and exact model. It is best suited to people who want low-effort, overnight tracking and have a compatible bed with a nearby outlet—not anyone seeking a diagnosis or a substitute for a sleep study.
What the Withings Sleep Analyzer tracks
The sensor is installed under the mattress, plugged into power, and connected to the Withings app over Wi-Fi after setup with a compatible smartphone. You do not wear it overnight. Withings lists sleep duration, sleep onset and wake time, deep/light/REM stages, interruptions, time to fall asleep, continuous and average heart rate, snoring duration, and a Sleep Score. The 2023 product guide distinguishes these sleep-tracking parameters from its Sleep Apnea Detector software, which it identifies as a medical device in non-US regions. Withings’ UK product page and its product guide describe the product and its functions.
For the UK listing, Withings says data storage is free and unlimited online with a Withings account, with data stored locally between syncs. That statement does not establish broader retention, privacy, or deletion terms; consult the current terms and regional app information for those details.
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Before choosing the Analyzer, check the bed type, the sensor’s placement, and the location of a power outlet. The product guide excludes waterbeds, air beds, and mechanically articulated mattresses. It also says not to interpret recordings when someone other than the main user lies on the mat. Follow the latest instructions supplied for your model and country.
#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.
Position the sensor correctly
- Place the mat sideways under the mattress at chest or heart level, in the area where you usually sleep.
- Make sure it contacts both the mattress and the box spring or bed platform. With slats, Withings says a flat, sturdy support such as cardboard can be used.
- Plug the sensor into power. If it has just been connected, Withings advises waiting 10 minutes before getting into bed.
- For apnea results, Withings support recommends sleeping for at least five hours before checking the app in the morning.
These placement and timing instructions come from Withings’ setup guidance. A compatible smartphone is needed for initial setup, but the older guide and current product page give different operating-system requirements. Check the live listing for your region rather than relying on an older minimum version.
Apnea detection is regional and is not a diagnosis
Do not assume every product sold under a Withings sleep-tracking name has the same apnea function. Withings says Sleep and Sleep Analyzer are distinct devices; its support FAQ describes apnea detection as an additional Sleep Analyzer feature and says that in territories where Sleep Analyzer is available, the earlier Sleep product is no longer offered. The product guide describes Sleep Apnea Detector software as a medical device for non-US regions. Check your country and exact model before relying on feature availability or making a claim about regulatory status. Withings support and its product guide provide the relevant distinctions. US-facing Sleep Rx materials describe a different product pathway and should not be taken as evidence that a consumer Sleep Analyzer has the same feature or clearance.
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.
Withings’ guide cautions that interpretations are “potential findings,” not a complete diagnosis of sleep apnea or other sleep-breathing disorders. It says not to take clinical action based on detector output without a qualified health professional. Withings support advises people whose results show signs of apnea to consult a doctor, who can decide what evaluation or treatment is appropriate. The guide also lists arrhythmia, cardiac insufficiency, asthma, and COPD as limitations for use of the apnea detector, and warns against changing medication or treatment without consulting a doctor. These are specific warnings in Withings’ instructions, not a substitute for checking the latest regional guidance or discussing your circumstances with a clinician.
How reliable are the readings?
Think of the app’s readings as useful trends and prompts for discussion, not as precise measurements guaranteed to match a sleep study. In a month of use, Wareable’s reviewer praised the no-wearable setup, generally reliable data in that reviewer’s experience, clear app organization, and detailed snoring and apnea information. The same review reported wake-detection errors, including an hour awake in bed being counted as sleep, and described coaching as basic and not very personalized. These are observations from one reviewer’s experience, not controlled accuracy results for every sleeper or bed. Wareable’s review provides that hands-on context.
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.)
Tom’s Guide’s 2026 roundup similarly describes a low-maintenance mat that starts and stops tracking automatically, while noting it may mistake sitting in bed during the day for a nap. It presents the device as a useful option for people who dislike wearables and want information to discuss with a medical professional—not as a universally accurate monitor. Tom’s Guide’s roundup gives its perspective.
Withings says the device has been compared with polysomnography, but the cited product page does not provide study details sufficient to quantify performance here. Neither reviewer impressions nor that unquantified statement establishes that an individual reading is clinically interchangeable with a sleep study.
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
Who should choose it instead of a wearable?
The main trade-off is between a dedicated, under-mattress sensor and a wearable that can track more than sleep. The Analyzer suits people who do not want to wear or charge a device overnight, prefer automatic bed-based tracking, and have a compatible mattress and accessible outlet. Wareable names Oura Ring and Withings ScanWatch 2 as alternatives, but their current features, subscriptions, and regional availability should be checked before comparing models.
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| Consideration | Sleep Analyzer | Ring or watch |
|---|---|---|
| Nighttime wear | Sensor sits under the mattress; nothing is worn. | Must be worn overnight and may need charging; exact requirements vary by model. |
| Tracking scope | Dedicated to sleep and related overnight readings. | May also provide daytime activity or broader biometrics; confirm the current model’s specifications. |
| Bed and power needs | Requires a compatible bed, correct sensor placement, and a nearby outlet. | Does not require a sensor under the mattress; charging needs vary. |
| Apnea feature | Availability and regulatory status depend on country and exact device version. | Do not assume a wearable’s features or regulatory status are equivalent; verify the exact model. |
| Cost or subscription comparison | Current price and subscription terms are not established here; check the regional listing. | Terms vary by model and service; check the current offer before comparing. |
No single form factor is a universal winner. Choose by whether you want sleep-only tracking without wearing a device or a wearable that may cover daytime activity too. Neither the product information nor the cited reviews establish that their readings are clinically interchangeable.
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
Verdict
The Withings Sleep Analyzer is a sensible option for hands-off, overnight tracking if your bed is compatible and you want to avoid wearing a tracker. Its app provides a broad set of sleep-related readings, but occasional sleep/wake misclassification is possible, and the apnea feature is region-specific and must be treated as a prompt for professional discussion—not a diagnosis. If you need medical assessment, have one of the conditions named in the guide, or want dependable all-day measurements, check with a clinician or consider whether a different tracking format better fits your needs.
Quick Recap
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.
