Pregnancy Sleep Position Tracker | Side-Sleep Habits Without a Camera
Dovy Paukstys
Founder, Komori Care
Later in pregnancy, many clinicians talk about side-sleeping as a sleep habit — going to sleep on your side, and rolling back to your side if you wake on your back. This page compares consumer gadgets that log or nudge sleep position. It is wellness information, not obstetric advice, and not a diagnostic or fetal-monitoring tool. Ask your own clinician what applies to you.
Disclosure: I am Dovy, founder of Komori Care. Contactless bedside radar for sleep position, coming 2027, wellness only, not FDA-cleared, not obstetric monitoring. Komori Lite $399, Komori with base $799. One-press top button cuts sensing. Optional camera records to an encrypted SD card.
Quick answer
- Pregnancy Coach ($219 sale / $259 regular, store.pregnancycoach.com): Clip-on wearable that vibrates when you spend time on your back. Includes one year of membership. The company cites a Mayo Clinic user-experience study and says back-sleep time fell about 80% in that group. Mayo's public listing describes an observational usability study (protocol 16-006414), not a published randomized efficacy trial. The product is marketed as general wellness and is not FDA-cleared.
- ORO side-sleep sensor (£220, oromed.co.uk): Vibration sensor worn in the included maternity bras. Vendor bundle is 3 bras, 3 briefs, and one sensor. CE-marked per the vendor. Frame it as a side-sleep habit reminder — we are not repeating their medical marketing language here.
- Muse S Athena ($474.99 MSRP, choosemuse.com): EEG + fNIRS headband. Sleep position is a secondary feature (Muse and a Tom's Guide review mention it). Built for meditation and sleep-stage tracking, not as a pregnancy position tool.
- Komori Care (coming 2027): Camera-free position timeline, no wearable. Wellness only. Not obstetric monitoring.
Pillow wedges and a conversation with your clinician remain the no-gadget path.
Sleep habits, not medical claims
We are not going to tell you a tracker protects a pregnancy. Position data can make a habit visible — how much of the night you spent on your back versus your side — the same way a sleep log makes bedtime visible. Waking on your back and rolling over is a normal night for most people.
If a vendor's page leads with fetal-risk language, treat that as their marketing, not as a reason to skip your clinician.
Pregnancy Coach
Small magnetic clip sensor plus an app. Customizable vibration. Nightly position reports. $219 introductory / $259 regular on the official store, with one year of membership included. Renewal for a later pregnancy is $99 for one year inside the app, per their FAQ.
Company claim: a Mayo Clinic study showed about 80% less back sleep. Independent read: Mayo lists a closed observational user-experience study meant to precede a larger efficacy trial. We are not calling this "Mayo-validated treatment."
More: pregnancycoach.com/pregnancy-coach.
ORO side-sleep sensor
UK vendor OROMED sells a bra-worn vibration sensor. Current bundle price we found: £220. Vibration when you stay on your back; vendor describes a grace period then a stronger buzz. No app required. CE marking is the vendor's claim.
We use "side-sleep sensor" on purpose. Their storefront name is more medical than this site will repeat.
More: oromed.co.uk.
Muse S Athena
$474.99 hardware MSRP. EEG sleep stages plus optional meditation library. Position tracking is not the reason to buy it. If you already wanted Muse, position is a bonus line in the spec sheet.
Komori Care (coming 2027)
Overhead + nightstand radar for a back/side/stomach timeline. Nothing to clip on. One-press top button cuts sensing. Optional camera to an encrypted SD card. Lite $399, with base $799. Coming 2027.
Not cleared for pregnancy use. Not fetal monitoring. Not a vibration-nudge device — we are not inventing that feature. Waitlist.
For a longer research read that is already on this site, see sleep position during pregnancy.
Comparison
| Feature | Pregnancy Coach | ORO sensor | Muse S Athena | Komori (2027) |
|---|---|---|---|---|
| Position logging | Yes | Back-vs-side nudge | Secondary (vendor / review) | Timeline (design intent) |
| Vibration nudge | Yes | Yes | No | Not a claimed feature |
| Wearable | Clip sensor | Bra sensor | Headband | No |
| App | Required | Not required | Required | Design intent |
| Published efficacy trial | Company cites Mayo UX study | Vendor CE claim | Sleep-stage validation is Muse's lane | None |
| Price | $219 sale / $259 + 1yr membership | £220 bundle | $474.99 MSRP | Lite $399, with base $799 |
| Availability | Shipping | Shipping | Shipping | Coming 2027 |
FAQ
Do I need a tracker during pregnancy? No. Many people use a pillow and a habit. A gadget is optional.
Will a regular ring or watch label back vs side? Usually not. Movement and stages are not a position timeline. See why wearables miss sleep position.
Is Pregnancy Coach FDA-cleared? The company says it is marketed as general wellness and is not FDA-cleared.
Is Komori available now? No. Coming 2027. Wellness only. If you want a shipping position nudge, Pregnancy Coach or ORO are the consumer options we could verify.
Keep reading
- Sleep position during pregnancy
- How to track sleep position without a camera
- Best sleep position tracker without a wearable
- How to stay on your side
- Side-sleep pillow height
- Best sleep tracker without a wearable
- Chronic pain and sleep position
- Withings Sleep Analyzer alternative
Komori Care is a contactless sleep monitor in development — camera-free position tracking, coming 2027. Wellness only, not FDA-cleared, not obstetric monitoring. 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).