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SLEEP TRACKERS·OURA
Oura Ring 4
4.3 · 8,934 shopper ratings
Editor score8.4/10
Best for: Passive trackers, women's health tracking, athletes wanting recovery data
Lowest price we found
$349.00
At Amazon (as of – Details)
Buy at Amazon · $349.00 ↗Review updated 2026-06-30
Battery
7 days
Subscription
$5.99/mo required for full features
Sleep stages
Yes (light / deep / REM)
The most comfortable passive sleep tracker on the market — if you can stomach the $5.99/mo subscription.
Worth it at $249$349 plus $5.99/month forever. RingConn's Gen 2 scores the same 8.4 at $280.49 with no subscription. At our $249 sale target, Oura's hardware would cost $31.49 less than RingConn, before membership fees.Oura's fourth-generation ring lands with a smaller form factor, deeper finger-shape variants, and refined SpO2 + heart-rate sensors. The data ecosystem (Oura app + $5.99/month subscription) is the strongest part of the package — and also the most-debated. Best for passive trackers who want 7-day battery + women's health features.
Price & where to buy
Prices checked 2026-10-09amazon
AmazonBest price✓ Fast delivery · easy returns
Prime · in stock
$349.00
(as of – Details)
ŌURA
Oura.com
Free shipping · 30-day trial
Price varies
Not price-checked
BestBuy
Best Buy
Free shipping
Price varies
Not price-checked
Prices shown were last checked on 2026-10-09 and can change at any time — the price on the retailer's site at checkout is the one that applies. 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.com at the time of purchase will apply to the purchase of this product. As an Amazon Associate and affiliate we may earn a commission on purchases made through these links, at no extra cost to you.
How our prices work
We show the price at our recommended retailer as at our last check of that offer (2026-10-09) and the manufacturer's list price for comparison. Amazon prices come from Amazon's own product data service and are refreshed twice a day; each one shows the date and time Amazon gave it, and one older than 24 hours is replaced by “Check price”. Other retailers' prices are checked by hand and show the date of that check. Retail prices move constantly, so the price on the retailer's own page at checkout is the one that applies. More on Amazon prices
Should you buy it?
What we like
- Highest sleep-staging score in our comparison
- Invisible on your finger — nothing on the wrist in bed
- 6-8 day battery; charges in under an hour
- Readiness score genuinely changes behavior
What to know before buying
- $5.99/mo membership required for full insights
- No screen — depends entirely on the phone app
- Sizing kit adds a wait before first use
At a glance
Battery7 days
Subscription$5.99/mo required for full features
Sleep stagesYes (light / deep / REM)
SpO2Yes (nightly)
ECGNo
Body temperatureYes (continuous)
Menstrual cycleYes (Cycle Insights)
Water rating10 ATM
Trial30-day return
Sizes6-13 (18 finger shapes)
How it scores
How our 8.4/10 breaks down — rated on the dimensions that matter most for sleep trackers, from published specifications and third-party test data, not the marketing.
Accuracy
9/10
Battery life
9/10
App & insights
8.5/10
Comfort
10/10
Value
8/10
Compare with alternatives
Quick verdicts for the sleep trackers most often considered alongside the Oura Ring 4.
VS·HEAD-TO-HEAD
Oura Ring 4 vs Fitbit Charge 6
The best no-subscription sleep tracker under $200 — 7-day battery, ECG, and Google's ecosystem behind it.
→ Mainstream buyers, no-subscription users, Google-ecosystem users
VS·HEAD-TO-HEAD
Oura Ring 4 vs Whoop 5.0
The recovery-focused tracker for serious athletes — no screen, and sold only as an annual membership with the band included, but the recovery data is unmatched.
→ Athletes, high-volume trainers, HRV-driven recovery tracking
VS·HEAD-TO-HEAD
Oura Ring 4 vs Apple Watch Series 10
Discontinued — superseded by Series 11. Still the strongest sleep-tracking smartwatch for iPhone users if you find remaining stock, but buy the Series 11 instead unless the discount is steep.
→ Existing owners, discounted-stock buyers comparing against Series 11
VS·HEAD-TO-HEAD
Oura Ring 4 vs Garmin Venu 3
The best cross-platform sleep tracker (Android + iOS) with 14-day battery and no subscription — Garmin's overlooked sleep tool.
→ Athletes, Android users, cross-platform buyers, no-subscription
Decision support · what no other comparison site has
Take the quiz · 60 secNot sure which one is right for you?
Our 60-second sleep score quiz asks 8 questions and recommends the right sleep gear for your goals. Built by sleep engineers. Free, no signup.
Editor's deep dive
Is the Oura Ring 4 worth it?
The short answer
Yes, the Oura Ring 4 is worth it for sleep-focused adults who want passive tracking from one of the few sleep wearables with published polysomnography validation. The $5.99/month subscription is required to unlock the full data — budget $72/year on top of the $349 ring. Skip if you want a one-time purchase, prefer wrist wearables, or play contact sports.
Who it's for
People who want sleep + recovery data passively, without strapping a watch on their wrist for the night. The ring form factor is the biggest differentiator — it sits out of the way during sleep, charges in 20 minutes, and lasts 4-7 days per charge. Best for adults who care about trends over weeks (sleep score, readiness, HRV) more than minute-by-minute accuracy.
Best for you if…
Sleep-focused adult Great fit
One of the most thoroughly validated consumer sleep trackers, smallest form factor, and the data is presented in a way you'll actually act on.
Endurance athlete in training Decent fit
Sleep + recovery data is solid, but Whoop's strain framing is more useful for training-load decisions.
Casual fitness tracker user Skip it
Subscription cost is hard to justify if you're mostly tracking steps and active minutes — Apple Watch or Garmin Vivosmart 5 makes more sense.
Shift worker tracking adaptation Great fit
Adaptive 'main sleep period' detection handles irregular schedules better than wrist-watch alternatives. Social-jet-lag graph is genuinely useful.
Pregnancy / cycle tracking Great fit
Body-temperature trend tracking is best-in-class — Natural Cycles partnership-grade accuracy without the dedicated device.
Contact-sports athlete Skip it
Ring form factor breaks in CrossFit, weightlifting, basketball. Whoop strap or screen-on watch is more durable.
Bottom line
The default pick for sleep-focused wearables in 2026 if subscription cost isn't a dealbreaker. If you want a one-time purchase or live in metric-heavy fitness data, look at Whoop or Apple Watch.
How we scored this
This is a synthesis review built from: Oura's published technical specs, Wirecutter's 2024 wearables roundup, RTINGS bands testing, the Chee et al. 2021 polysomnography validation paper (Nature and Science of Sleep), and aggregated owner consensus from r/ouraring, r/sleep, and the Sleep Doctor podcast review. Score weights: accuracy 25%, comfort 20%, battery 15%, app/data 25%, value 15%. Hands-on testing pending — 60 nights wearing the ring across normal sleep, travel, and elevated-HR days will refine the per-dimension scores. Reviewer signoff by Dr. Logan Foley CSSC pending.
Sources
- [1] Chee, N.I.Y.N., Ghorbani, S., Golkashani, H.A., Leong, R.L.F., Ong, J.L., & Chee, M.W.L. (2021). Multi-night validation of a sleep tracking ring in adolescents compared with a research actigraph and polysomnography. Nature and Science of Sleep, 13, 177-190.
- [2] de Zambotti, M., Cellini, N., Goldstone, A., et al. (2019). Wearable sleep technology in clinical and research settings. Medicine & Science in Sports & Exercise, 51(7), 1538-1557.
- [3] Maijala, A., Kinnunen, H., Koskimäki, H., et al. (2019). Nocturnal finger skin temperature in menstrual cycle tracking: ambulatory pilot study using a wearable Oura ring. BMC Women's Health, 19(1), 150.
More sleep trackers we compared
See all →
Frequently asked questions
Is Oura Ring 4 worth $349?
Yes if you want passive sleep tracking + women's health features + 7-day battery. Skip it if you don't want the $5.99/mo subscription — the hardware works without it but the meaningful insights live behind the gate.
Do I need the Oura subscription?
Yes for full features. Basic sleep + activity work without it. Cycle Insights, Readiness Score history, and Rest Mode need the subscription. Yearly cost: $71.88.
Oura Ring 4 vs Whoop 5 — which is better?
Whoop wins for athletes wanting recovery science and 24/7 strain tracking. Oura wins for passive daily use + women's health + no-band comfort. Oura is still cheaper long-term ($349 + $71.88/yr vs Whoop $239 + $360/yr — Oura is ahead by year one and further ahead every year after).
Where's the cheapest place to buy Oura Ring 4?
Buy direct. Amazon is $349 at our latest check, which is exactly Oura.com's MSRP — the discount that used to make Amazon the obvious choice is gone. At the same price, Oura.com throws in the 30-day trial and the free finger-sizer kit, and ring sizing is the one thing you do not want to guess at.
Affiliate disclosure: SleepyHero earns a small commission when you buy through these links. It doesn't cost you extra. Reviews and rankings are editorial — we don't accept payment for placement.