Withings Sleep Analyzer Alternative | Under-Mattress Sleep Trackers Compared
Dovy Paukstys
Founder, Komori Care
The Withings Sleep Analyzer is the usual under-mattress pick: $199.95 on the Withings US store, no required subscription for core sleep data, and a JMIR Human Factors 2026 home study that reported 87% sleep/wake accuracy, 93% sleep sensitivity, 73% wake sensitivity, and 63% four-stage accuracy. If you want something else, it's usually because the mat isn't covering the job you actually have.
Disclosure: I am Dovy, founder of Komori Care. Contactless bedside radar for sleep position, coming 2027, wellness only, not FDA-cleared. Komori Lite $399, Komori with base $799. One-press top button cuts sensing. Optional camera records to an encrypted SD card.
Quick answer
Pick by the job Withings isn't doing for you:
- OZI Sleep Tracker ($199, ozisleep.com): Under-the-sheet sensor. Sleep stages, heart rate, breathing trends, movement. Multi-bed dashboard. No camera, no microphone, no subscription. HSA/FSA eligible.
- Emfit QS ($338, emfit.com): Under-mattress ballistocardiography with a recovery/HRV focus and raw exports. Price includes three years of Emfit cloud; after that the cloud is $50/year.
- SleepScore Max ($149.99 list, shop.sleepscore.com): Bedside sonar, nothing under the mattress. Sleep architecture and a daily SleepScore. No heart rate. Official shop listing was sold out when we checked in October 2026 — confirm availability before you plan around it.
- Sleepal AI Lamp ($399 on the Sleepal store): Bedside 60GHz radar lamp. Vendor cites respiratory-rate RMSE under 2 versus medical-grade devices and training on 2,000+ PSG nights.
- Komori Care (coming 2027): Camera-free sleep position timeline (back/side/stomach). One-press top button cuts sensing. Optional camera to an encrypted SD card. Wellness only.
Why people look past Withings
The mat is competent. The gaps are specific:
No reliable back / side / stomach labels. Movement and weight distribution are not the same as a position timeline. If that's the question, see how to track sleep position without a camera.
One mat, one sleeper. Multi-bed households need one Withings per bed and separate views. OZI's dashboard is built for several beds in one app.
Under-mattress install. Thick mattresses or toppers can make a slide-under mat harder to place. Bedside sonar or radar skips that.
HRV depth. Withings gives heart rate. Emfit is the recovery-data mat.
OZI Sleep Tracker
Thin sensor under the fitted sheet. Plugs into USB power. App on iOS and Android.
Compared with Withings: similar movement-derived stages, under-the-sheet instead of under-the-mattress, multi-bed view, no subscription. $199 one-time.
More: ozisleep.com/products/ozi-sleep-tracker.
Emfit QS
Under-mattress sensor aimed at nocturnal HRV and recovery, with raw exports. Finnish company; order through Emfit, availability varies by region.
Compared with Withings: deeper HRV and exports; not a breathing-disturbance screener. $338 includes three years of cloud, then $50/year per Emfit's personal-use page. That is not a no-subscription mat.
More: emfit.com.
SleepScore Max
Nightstand sonar. Sleep stages and breathing patterns, no heart rate. SleepScore Labs lists $149.99. The official store showed it sold out in October 2026.
Sonar is a different physics than a pressure mat or 60GHz radar. Fine if you want zero-under-mattress placement and can live without heart rate.
More: sleepscore.com.
Sleepal AI Lamp
Bedside lamp with 60GHz radar. Sleepal's US store lists $399. Vendor-claimed posture tracking is not the same as a dedicated position timeline — verify what the app actually labels.
More: sleepal.ai.
Komori Care (coming 2027)
Two-piece bedside radar: sensor above the headboard, base on the nightstand. Designed for a back/side/stomach timeline, not stage labels. One-press top button cuts sensing. Optional camera records to an encrypted SD card under your control.
Komori Lite $399. Komori with base $799. Coming 2027. Wellness only — not medical, not FDA-cleared. Join the waitlist.
When to keep Withings
Keep the Sleep Analyzer if you want a shipping under-mattress mat from a known brand, Apple Health / Google Fit sync, and core data without a required subscription. $199.95 on the US store. Alternatives above cover multi-bed households, HRV exports, bedside placement, or a position timeline — not Withings' core job.
Comparison
| Feature | Withings Sleep Analyzer | OZI | Emfit QS | SleepScore Max | Sleepal AI Lamp | Komori (2027) |
|---|---|---|---|---|---|---|
| Placement | Under mattress | Under sheet | Under mattress | Nightstand sonar | Nightstand radar | Overhead + nightstand radar |
| Sleep stages | Yes | Yes (movement-derived) | Yes | Yes | Yes (vendor-claimed) | Movement patterns, not stage labels |
| Heart rate | Yes | Yes | Yes (HRV focus) | No | Yes | Not a claimed feature |
| Position timeline | No | No | No | No | Marketed (verify) | Yes (design intent) |
| Subscription | No for core data | No | Cloud after year 3 ($50/yr) | No for core features | Not published as required | No (one-time) |
| Price | $199.95 (US store) | $199 | $338 + 3yr cloud | $149.99 list | $399 | Lite $399, with base $799 |
| Availability | Shipping | Shipping | Shipping | List price; shop sold out Oct 2026 | Listed on vendor site | Coming 2027 |
FAQ
Is there a cheaper shipping mat than Withings? Withings is $199.95 in the US. SleepScore Max lists $149.99 but was sold out on the official shop when we checked. OZI is $199. Emfit is $338.
Does OZI replace Withings? Same idea (pressure / movement under bedding), different placement and household features. OZI is under the sheet with a multi-bed dashboard. Withings is under the mattress with a breathing-disturbance index.
Does Emfit screen for apnea? No. Emfit tracks respiratory rate and recovery metrics. If you have a breathing concern, that's a clinician conversation, not a mat swap.
Does Komori ship now? No. Coming 2027. Waitlist. For something tonight: Withings, OZI, or Sleepal.
Keep reading
- Best under-mattress sleep tracker
- Best sleep tracker without a wearable
- How to track sleep position without a camera
- Sleep monitor with nothing to charge
- Overnight sleep habits for aging parents
- Sleep tracker for couples
- Contactless sleep monitors compared (2026)
- Eight Sleep alternative (contactless)
- Bedside sleep tracker alternatives
- Pregnancy sleep position tracker
- Teen sleep tracker without a wearable
- Sleep tracker for shift workers
Komori Care is a contactless sleep monitor in development — camera-free position tracking, coming 2027. Wellness only, not FDA-cleared. Join the waitlist.
You can choose a position at lights-out. Knowing what you held until morning is the hard part.
Komori is a contactless monitor that logs which position you slept in, through blankets, with no camera and nothing to wear. Pre-launch — join the list and we'll tell you when it ships.
Keep reading
Want to see your sleep position data?
Join the free waitlist for launch updates. Or lock in founder pricing with the Insider Pass ($49, credited toward your purchase).