8 Best Sleep Monitoring Devices (November 2026)

Sleep monitors fail in predictable ways. People buy a wrist-free mattress pad when what they actually want to know is their blood oxygen, or they buy a finger oximeter and then find it tells them nothing about sleep stages. Others pick a band that sits on the arm all night, then stop wearing it after a week. The Best Sleep Monitoring Devices depend on which question you are trying to answer: how long and how well you sleep, whether your breathing or oxygen dips, or whether someone in the house is getting out of bed.

The short answer: the EMAY EMO-90 Sleep Oxygen Monitor suits anyone who needs a downloadable overnight oxygen and heart rate report, the Withings Sleep Tracking Pad suits people who want stage and snoring data with nothing worn on the body, and the Hatch Sleep Clock suits those who want tracking built into a sunrise alarm and sound machine on the nightstand. The rest of the list covers a no-subscription under-sheet sensor, a nasal airflow recorder, an upper-arm band, and two radar and strap-style contactless trackers.

TL;DR: top picks at a glance

• Best overall: the EMAY EMO-90 Sleep Oxygen Monitor, with 72 hours of built-in memory and a free PC and mobile report that includes ODI data.
• Best for under-mattress tracking: Withings Sleep Tracking Pad, a 0.6 lb pad with Wi-Fi and Bluetooth that detects snoring and heart rate.
• Best for a bedside all-in-one: Hatch Sleep Clock, which combines contactless tracking with a sunrise alarm and sound machine in a 5.69-inch unit.
• Best for no monthly fees: OZI Sleep Tracker, a 33.5-inch under-sheet strip that tracks stages, heart rate, breathing and bed exits.

Best Sleep Monitoring Devices Comparison (November 2026)

#	Product	Best for	Worn or placed	Main metrics	Power
1	EMAY EMO-90 Sleep Oxygen Monitor	Overnight oxygen reports	Finger	SpO2 (70% to 100%), heart rate	Rechargeable
2	Withings Sleep Tracking Pad	Under-mattress tracking	Under mattress	Sleep cycles, heart rate, snoring	Not listed
3	Hatch Sleep Clock	Nightstand all-in-one	Nightstand	Micro-movements, breathing	Corded electric
4	OZI Sleep Tracker	No-subscription tracking	Under sheet	Stages, heart rate, breathing, movement	Not listed
5	EMAY Sleep Breathing Monitor	Airflow event recording	Nose probe and mask	Airflow, AHI, snoring	Not listed
6	Garmin Index Sleep Monitor	Recovery-focused athletes	Upper arm	Sleep score, stages, HRV	Up to 7 nights
7	SOMNDEEP Radar Sleep Monitor	Family trend viewing	Bedside	Duration, restlessness, movement trends	Not listed
8	KEULEN Smart Sleep Analyzer	Strap-style stage tracking	Sensor strap	Stages, heart rate, HRV, turnovers	Not listed

1. EMAY EMO-90 Sleep Oxygen Monitor: Best Rechargeable Finger Sleep Monitoring Device for Overnight SpO2

• Measuring Range: 70% to 100% SpO2
• Memory: 72 hours built in, no phone needed overnight
• Modes: Spot check and continuous tracking
• Alarm: Audio alert when oxygen or heart rate drops below a set threshold
• Software: Free PC software and iOS/Android app with CSV export

Pros:

• The 72-hour built-in memory means the device records on its own and syncs in the morning, so no phone has to stay connected overnight.
• Settings such as alarm threshold, mode switch and memory clearance can be changed on the device itself.
• The report shows oxygen and heart rate trends plus ODI data, which is the format a physician typically wants to see.
• The rechargeable design removes the need for AAA batteries, and the unit is light enough to wear to bed.

Cons:

• Some buyers find it slips off the finger during the night, so fit and sleeping position matter.
• Recording length draws mixed comments, with some users getting only about two and a half nights of data.
• It tracks oxygen and heart rate only, so there are no sleep stages or snoring data.

Best for: A reader who wants second-by-second overnight oxygen and heart rate data to review or share with a doctor.

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The EMAY EMO-90 Sleep Oxygen Monitor is different from most of this list because it measures one thing and reports it in detail. Continuous mode records second by second, and the free software exports that data as CSV or as a formatted report. The Withings Sleep Tracking Pad and OZI Sleep Tracker describe the shape of a night, while this device shows what blood oxygen did during it.

The spot-check mode is a practical extra, since the same unit works as a quick daytime reading without logging anything. Anyone who collects paper records alongside this digital report may also want a document scanner to keep the whole file in one place. Buyers generally describe the readings and reports as useful and the interface as easy to use.

It is the wrong choice if you want stage-by-stage sleep analysis or do not like anything clipped to a finger. In that case the Withings Sleep Tracking Pad or the Garmin Index Sleep Monitor fits better. If the concern is airflow rather than oxygen, the EMAY Sleep Breathing Monitor records a different signal.

2. Withings Sleep Tracking Pad: Best Under-Mattress Sleep Monitoring Device for Snoring and Cycle Analysis

• Placement: Under the mattress
• Connectivity: Wi-Fi and Bluetooth, iOS and Android
• Weight: 0.6 lb
• Tracked: Sleep phases, depth, interruptions, heart rate, snoring
• Release: April 2018

Pros:

• Nothing is worn or charged, because the pad sits beneath the mattress and works from there.
• It detects snoring episodes automatically, which neither the OZI Sleep Tracker nor the KEULEN Smart Sleep Analyzer lists as a feature.
• A pneumatic sensor measures the mechanical wave from each heartbeat for heart rate data.
• The app analyses sleep phases, depth and interruptions and offers advice for improving sleep.

Cons:

• Accuracy draws mixed comments, with some users finding it precise and others finding it unreliable.
• Wi-Fi and Bluetooth connection problems are a recurring complaint.
• It is an older design from 2018, and the power requirements are not specified.

Best for: A solo sleeper who wants stage and snoring data with no wearable and is comfortable with an app-based setup.

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The Withings Sleep Tracking Pad is the most established contactless tracker here. It was positioned as the first under-mattress sleep sensor, and the concept is still the template that the OZI Sleep Tracker follows with an under-sheet strip. Where Withings differs is the combination of snoring detection and cardiovascular measurement from a single pad.

Setup quality is where buyers split. When the connection holds, people say it helps them understand their nights. When it does not, the complaints are about Wi-Fi and Bluetooth pairing. If a stable connection matters to you, the Hatch Sleep Clock offers the same two radios but lives on a nightstand where it is easier to troubleshoot.

Skip it if you want oxygen data, which only the EMAY EMO-90 Sleep Oxygen Monitor and the Garmin Index Sleep Monitor provide here. It is also the wrong pick for a bed where you cannot place a pad under the mattress, such as some adjustable or platform bases. The Hatch Sleep Clock avoids that constraint entirely.

3. Hatch Sleep Clock: Best Nightstand Sleep Monitoring Device for Sunrise Alarm and Sound Machine Use

• Placement: Tabletop, 5.69 x 3 x 1.5 inches
• Connectivity: Bluetooth and Wi-Fi, controlled by app
• Power: Corded electric
• Extras: Alarm, noise machine, smart light
• Warranty: 1 year

Pros:

• It replaces an alarm clock, a sound machine and a tracker with one nightstand unit.
• Hatch cites 97% accuracy for detecting micro-movements and breathing patterns without anything worn.
• The sunrise alarm and bedtime reminders are built around circadian rhythm, which buyers describe as a gentler way to wake.
• Setup is described as quick, and the app includes a library of sounds and audio content.

Cons:

• The most common complaint is data that feels wrong, including repeated recalibration prompts.
• App functionality gets mixed feedback, with some users reporting that it does not work reliably.
• It needs a power cord and a nightstand within range, and heart rate readings are not specified.

Best for: A sleeper who wants a calmer wake-up routine and light tracking, and who dislikes wearing a band or watch.

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The Hatch Sleep Clock is a sleep environment product that also tracks, which is the opposite emphasis from the Withings Sleep Tracking Pad. It gives guidance rather than a score, with morning insights and suggestions tailored to the patterns it sees. It also comes in Greige alongside the Putty finish.

The tracker side is the weaker half for a few buyers, and the value of the clock, light and sounds is the stronger half. If detailed physiological data is the goal, the OZI Sleep Tracker and Garmin Index Sleep Monitor list more metrics. If a better wake-up is the real goal, nothing else on this list does the sunrise job.

Do not buy it for medical-style questions, since it offers no oxygen or airflow measurement. A reader who wants those should look at the EMAY EMO-90 Sleep Oxygen Monitor or the EMAY Sleep Breathing Monitor instead.

4. OZI Sleep Tracker: Best Under-Sheet Sleep Monitoring Device for Subscription-Free Household Tracking

• Dimensions: 33.5 x 2.6 x 0.07 inches
• Tracked: Sleep stages, heart rate, breathing rate, movement
• Alerts: Bed exits, unusual movement, heart rate and breathing changes
• Fees: No monthly subscription
• Warranty: 1 year manufacturer

Pros:

• The thin strip slides under the sheet, so there is no watch, ring, camera or charging routine.
• Real-time bed-exit and movement alerts make it useful for caregivers as well as individual sleepers.
• The stated user range covers adults, children aged 5 and over, couples and older relatives.
• It reports light, deep and REM sleep, awake periods, time to fall asleep and a nightly sleep score.

Cons:

• The sensor is a narrow strip, so placement relative to the sleeper's chest matters.
• Power and battery details are not specified.
• There is limited independent buyer feedback to confirm accuracy over time.

Best for: A household or caregiver who wants sleep data and bed-exit alerts without a monthly fee.

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The OZI Sleep Tracker is the clearest answer to the subscription question. Its metrics overlap heavily with the Withings Sleep Tracking Pad, but it adds caregiver-style alerts that Withings does not list. That alert system is what makes it more of a household tool than a solo-sleeper gadget.

It is the wrong choice if you want snoring detection or a built-in alarm, since neither is listed. The Hatch Sleep Clock covers the alarm and the Withings Sleep Tracking Pad covers snoring.

5. EMAY Sleep Breathing Monitor: Best Nasal Airflow Sleep Monitoring Device for Respiratory Event Recording

• Weight: 10 g
• Sensors: Three sensors in one probe
• Connectivity: Bluetooth to a smartphone
• Metrics: Breath rate, flow, AHI, snoring
• Straps: Three sizes, food-grade silicone mask

Pros:

• It records airflow directly, which no other device here does.
• The 10 g weight and silicone mask are designed to stay comfortable through the night.
• A waveform view shows normal breathing as a smooth line and flags anomalies as possible respiratory events.
• It produces a sleep report from the data, and travels easily.

Cons:

• It cannot be used with a CPAP mask at the same time.
• It is designed for nasal breathing and is not recommended for mouth breathers.
• It does not record SpO2 or pulse rate, and it is not a diagnostic tool.

Best for: A nose breather who wants to record airflow and breathing events at home and bring a report to a clinician.

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The EMAY Sleep Breathing Monitor is a niche tool and works best alongside the oxygen view from the EMAY EMO-90 Sleep Oxygen Monitor, since each covers what the other cannot. It is the only listed device that places something on the face, so comfort is a real consideration.

Avoid it if you use CPAP or breathe through your mouth at night. The EMAY EMO-90 Sleep Oxygen Monitor or a contactless option such as the Withings Sleep Tracking Pad is the better route in those cases.

6. Garmin Index Sleep Monitor: Best Upper-Arm Band Sleep Monitoring Device for Recovery Metrics

• Placement: Upper arm, S-M size (12.8 x 2.5 inches)
• Weight: 14.2 g
• Battery: Up to 7 nights
• Sensors: Optical and Pulse Ox
• Metrics: Sleep score, stages, HRV, duration

Pros:

• Battery life reaches up to 7 nights, far longer than most wrist wearables.
• Pulse Ox supports a breathing variations feature, giving it an oxygen-related signal the contactless options lack.
• Skin temperature feeds women's health tracking, including period predictions and ovulation estimates.
• A smart wake alarm vibrates at the optimal time, and data syncs to the Garmin Connect app with or without a Garmin watch.

Cons:

• It must be worn on the arm every night, which not everyone tolerates.
• It is not a medical device, and the data is a close estimation, not a measurement.
• Pulse Ox is not available in all countries.

Best for: An athlete or Garmin user who wants HRV and recovery data without wearing a watch to bed.

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The Garmin Index Sleep Monitor is the only listed device aimed squarely at training recovery. Athletes who pair sleep data with recovery tools, such as a shockwave therapy machine for home use, will find the HRV and sleep score the most relevant outputs. It is also lighter and thinner than it sounds, at 14.2 g and 0.02 inches thick.

It is the wrong pick for anyone who dislikes wearing anything in bed. The Withings Sleep Tracking Pad and OZI Sleep Tracker cover similar stages with no contact at all.

7. SOMNDEEP Radar Sleep Monitor: Best Millimeter-Wave Bedside Sleep Monitoring Device for Family Trend Viewing

• Sensing: Millimeter-wave radar, no camera
• Weight: 0.7 lb
• Wi-Fi: 2.4GHz only, 5GHz not supported
• Tracked: Sleep duration, restlessness, movement trends
• Extras: Reminders and voice or text family messages

Pros:

• Radar sensing needs no wearable and no camera, which keeps the setup private.
• Family members can view shared trend information through the app.
• Reminders and voice or text messages make it a routine aid for independent living.
• Nightly and long-term trend reports use a clean visual format.

Cons:

• It does not support blood oxygen monitoring.
• Setup requires a 2.4GHz Wi-Fi network, which some routers restrict.
• It is for general wellness only, and sleep stage and heart rate data are not specified.

Best for: A family that wants simple nightly trend visibility for an older relative at home.

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The SOMNDEEP Radar Sleep Monitor leans toward routine and wellness check-ins, not physiological depth. Compared with the OZI Sleep Tracker, it lists fewer physiological metrics but adds the reminder and messaging features.

If you want stage data and heart rate, the OZI Sleep Tracker is the better fit. If you need oxygen, use the EMAY EMO-90 Sleep Oxygen Monitor.

8. KEULEN Smart Sleep Analyzer: Best Sensor-Strap Sleep Monitoring Device for Stage and Turnover Tracking

• Design: Non-wearable sensor strap
• Movement: Bed exits, time to fall asleep, turnovers
• Stages: Deep, light, REM and awake
• Vitals: Breathing, heart rate, HRV
• Versions: Two listed, A and B

Pros:

• It counts bed exits and turnovers, which most trackers here do not report.
• HRV analysis gives a view of recovery and stress through the night.
• The report offers sleep suggestions based on the analysis.
• It uses a non-wearable design with no band on the body.

Cons:

• Dimensions, power and connectivity are not specified.
• There is little buyer feedback to show how it performs in daily use.
• The product naming and description are generic, so support quality is unclear.

Best for: A budget-minded buyer who wants stage and turnover data without wearing a device.

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The KEULEN Smart Sleep Analyzer is a spec-sheet match for the OZI Sleep Tracker, with stages, heart rate and breathing. It is also sold in a second version, listed as B. The gap is documentation: OZI states its size, warranty and alert system, while KEULEN states few details.

Choose the OZI Sleep Tracker if bed-exit alerts or a stated warranty matter. Choose the Withings Sleep Tracking Pad if you want a more established product.

Buyer's Guide: How to Choose the Right Sleep Monitoring Device

The core trade-off is depth versus convenience. Devices that touch the body, such as the EMAY EMO-90 Sleep Oxygen Monitor and the Garmin Index Sleep Monitor, give vital-sign data, while contactless pads and radar units are easier to live with but estimate more.

Before choosing, check these project details:

• Question to answer: Decide whether you want sleep stages, oxygen levels, airflow events or simple trends.
• Comfort tolerance: Be honest about whether you will keep wearing something on your finger, arm or face.
• Bed setup: Under-mattress and under-sheet sensors need a bed where they can sit flat.
• Connectivity: Check whether the device needs Wi-Fi, Bluetooth or both, and on which band.
• Intended use: Confirm whether the maker positions it as wellness or as a medical aid.

Sensor Placement and Comfort

A finger clip, an arm band and a nasal mask are the most intrusive options, and each is the EMAY EMO-90 Sleep Oxygen Monitor, Garmin Index Sleep Monitor or EMAY Sleep Breathing Monitor respectively. They get closer to the signal, so they can record things the contactless devices cannot. The trade-off is that fit problems, like a finger clip that slips, ruin a night of data.

Contactless options such as the Withings Sleep Tracking Pad, OZI Sleep Tracker and KEULEN Smart Sleep Analyzer sit under the mattress or sheet. They are far easier to keep using nightly, and the Hatch Sleep Clock and SOMNDEEP Radar Sleep Monitor go further by sitting on a nightstand.

Metrics and Reports

Look at what the report contains, not just what the sensor reads. The EMAY EMO-90 Sleep Oxygen Monitor offers ODI and CSV export, the Garmin Index Sleep Monitor offers HRV and a sleep score, and the Withings Sleep Tracking Pad adds snoring.

A single metric done well often beats a long list of estimates. If you only need to know whether oxygen drops, the EMAY EMO-90 Sleep Oxygen Monitor is simpler than the broad-trend devices such as the SOMNDEEP Radar Sleep Monitor.

Privacy and Contactless Sensing

Radar and pad sensors do not record images or audio, which sets them apart from a hidden audio recorder with live listening and its very different privacy implications. The SOMNDEEP Radar Sleep Monitor and the OZI Sleep Tracker both stress the no-camera approach.

Shared data is the other privacy question. The SOMNDEEP Radar Sleep Monitor lets family members view trends, and the OZI Sleep Tracker sends alerts, so agree on who sees what before setting either up.

Medical Limits and Intended Use

None of these devices diagnoses a condition. The EMAY Sleep Breathing Monitor states plainly that it does not replace a doctor's diagnosis, and the Garmin Index Sleep Monitor and SOMNDEEP Radar Sleep Monitor describe themselves as non-medical.

If you suspect sleep apnea or low oxygen, use a recording device like the EMAY EMO-90 Sleep Oxygen Monitor to gather data, then take the report to a clinician. Treat the contactless devices as habit trackers.

Frequently Asked Questions About Sleep Monitoring Devices

What is the most accurate sleep monitoring device?

Accuracy depends on the signal. The EMAY EMO-90 Sleep Oxygen Monitor measures oxygen directly at the finger, while the EMAY Sleep Breathing Monitor records airflow directly. Contactless units such as the Withings Sleep Tracking Pad estimate stages from movement and heart signals.

Do I need a wearable to track my sleep?

No. The Withings Sleep Tracking Pad, OZI Sleep Tracker and Hatch Sleep Clock all track without anything worn. Wearables such as the Garmin Index Sleep Monitor add HRV and Pulse Ox data in exchange for comfort.

Which sleep monitor has no monthly fees?

The OZI Sleep Tracker states that it has no monthly subscription. The other listed devices do not highlight subscription terms, so check the app before buying. The EMAY EMO-90 Sleep Oxygen Monitor offers free PC software and an app.

Can a sleep monitor detect sleep apnea?

Not on its own. The EMAY Sleep Breathing Monitor records airflow and AHI-style data but says it cannot replace a diagnosis. Take any report from it or the EMAY EMO-90 Sleep Oxygen Monitor to a physician.

Which device is best for couples?

The OZI Sleep Tracker lists couples and households among its intended users. The Withings Sleep Tracking Pad sits under the mattress, but whether it separates two sleepers is not specified. Check that before choosing for a shared bed.

Is a sleep monitor worth it without a smartwatch?

Yes, because several options work independently. The Garmin Index Sleep Monitor syncs to the Garmin Connect app without a Garmin watch, and the Hatch Sleep Clock works from the nightstand with a phone app.

Final Verdict: Which Sleep Monitoring Device Should You Buy?

Best Sleep Monitoring Devices for most people who want hard numbers start with EMAY EMO-90 Sleep Oxygen Monitor: it records oxygen and heart rate second by second to 72 hours of built-in memory, then exports a report with ODI data. Its main weakness is finger fit, since it can slip during sleep, and it offers no sleep stages.

For stage data without wearing anything, the Withings Sleep Tracking Pad adds snoring and heart rate under the mattress, but connectivity is its weak point. The Hatch Sleep Clock suits those who want a sunrise alarm and sound machine to come with light tracking. The OZI Sleep Tracker is the pick when avoiding monthly fees and getting bed-exit alerts matters most.

The specialist picks are narrower. The EMAY Sleep Breathing Monitor is for nasal airflow recording, the Garmin Index Sleep Monitor for HRV and recovery, the SOMNDEEP Radar Sleep Monitor for family trend viewing, and the KEULEN Smart Sleep Analyzer for stage and turnover tracking with sparse documentation. If you are still undecided, pick the one that measures the single thing you actually want to know, and add a second device only if the first leaves a clear gap.