At a Glance
- BEST OVERALL: Oura Ring 5 — Silver — The headline change is physical: Oura states the Ring 5 is 40% smaller than the Ring 4, in an all-titanium body that resists scratching better. That matters more than a spec sheet suggests, because the single most common reason people stop wearing a smart ring is that it is too bulky to sleep in or to wear alongside other rings. Oura also says the sensors were rebuilt for greater accuracy. Everything else — 50-plus metrics, roughly a week of battery, 40-plus app integrations — carries over.
- PREMIUM FINISH: Oura Ring 5 — Gold — Identical hardware to the Silver — same sensors, same battery, same software. You are paying $100 for the finish. That is a defensible thing to pay for on a device you wear every day for years and that sits next to your other jewellery, but be clear that it buys you nothing functional.
- BEST VALUE: Oura Ring 4 — Silver — The previous generation, still sold and still fully supported — and at $50 less than the Ring 5 it is the better buy for a lot of people. The Ring 4 tracks the same core metrics and receives the same app. What you give up is the size reduction and the rebuilt sensors. If you have never worn a smart ring and are not certain you will tolerate sleeping in one, spending less to find out is the sensible move.
- BUY THIS FIRST: Oura Ring 5 Sizing Kit — Buy this before you buy the ring. Oura is explicit that Ring 5 sizing is its own system — it does not match standard jewellery sizes, and it does not match Ring 4 sizes either, so an existing Oura owner cannot simply reorder the same number. Wear the sizer for a full 24 hours before deciding; fingers change size through the day and a ring that fits at 9am can be tight by evening. Oura also offers a free sizing kit direct from its own site, so buy this Amazon version only if you want it faster or as a gift.
| Product | Price |
|---|---|
| Oura Ring 5 — Silver | $399.00 |
| Oura Ring 5 — Gold | $499.00 |
| Oura Ring 4 — Silver | $349.00 |
| Oura Ring 5 Sizing Kit | $10.00 |
The Oura Ring 5 is now the current generation at $399 for Silver and $499 for Gold on Amazon, and the Ring 4 is still sold at $349. Both require the $5.99/month Oura Membership, with the first month included.
The upgrade is mostly physical, and that is not a criticism. Oura states the Ring 5 is 40% smaller than the Ring 4 in an all-titanium body with rebuilt sensors. Size is what decides whether a smart ring gets worn or ends up in a drawer, so a reduction of that size is a more meaningful change than another metric on the dashboard would be.
Below: which generation to buy, the sizing change that will catch existing Oura owners out, what the membership really costs over three years, and who should skip a smart ring altogether.
What an Oura Ring Actually Costs in 2026
On Amazon the Ring 5 is $399 in Silver and $499 in Gold, and the Ring 4 remains available at $349. Every new ring includes one free month of the $5.99/month membership. Here’s the current Amazon pricing breakdown and total first-year cost for each finish:
Cheapest way to buy: Silver, Stealth, or Brushed Silver + annual prepaid membership ($69.99) brings the first-year total to approximately $412.99. After year one, ongoing cost is $5.99/month or $69.99/year for membership — the ring itself does not need replacement.
Without a subscription: the ring still records raw biometric data, but the app limits insights to basic scores. Sleep stages, Readiness Score, stress tracking, cycle insights, and Apple Health/Google Health Connect sync all require active membership.
How We Picked
Every ASIN on this page was verified live against the Amazon Product Advertising API (PA API) before publishing — no guessed listings, no dead links. We rank by current Amazon price (not Oura’s direct pricing, which runs higher on premium finishes) and by whether a difference is functional or purely cosmetic. Within a generation, every finish is identical inside — same sensors, same battery, same firmware — so a finish premium buys appearance and nothing else. Across generations, the differences are real and we have set them out above. We do not accept manufacturer-paid placement; DeskFitPro earns Amazon Associates commission when readers buy through our links, and that’s the only relationship with Oura.
Oura Ring 5 vs Ring 4: What Actually Changed
Oura’s stated changes for the Ring 5 are a 40% size reduction, an all-titanium body it describes as more scratch-resistant, and larger sensors it says were rebuilt for greater accuracy. Battery stays at roughly a week. The metric set, the app and the integrations are the same on both.
Two honest caveats. First, we have not worn either ring, and Oura’s accuracy claim is a manufacturer statement — we have seen no independent validation of a Ring 5 improvement over the Ring 4, and until that exists it should not be your reason to upgrade. Second, the 40% figure is Oura’s, describing the ring body, not a measurement we have taken.
Buy the Ring 5 if you are new to Oura, or if bulk is the specific thing that has stopped you wearing a ring overnight. Size is the one change that plausibly alters whether you use the thing.
Buy the Ring 4 and save $50 if you mainly want the data. It runs the same app and tracks the same metrics.
Do not upgrade from a working Ring 4 on the sensor claim alone. Paying $399 plus a fresh sizing kit to replace a ring that already works, on the strength of an unverified accuracy improvement, is a poor trade. Wait for independent testing.
Detailed Reviews
1. Oura Ring 5 — Silver
Why it's here: The headline change is physical: Oura states the Ring 5 is 40% smaller than the Ring 4, in an all-titanium body that resists scratching better. That matters more than a spec sheet suggests, because the single most common reason people stop wearing a smart ring is that it is too bulky to sleep in or to wear alongside other rings. Oura also says the sensors were rebuilt for greater accuracy. Everything else — 50-plus metrics, roughly a week of battery, 40-plus app integrations — carries over.
- Oura states a 40% size reduction over the Ring 4, the biggest practical change here
- All-titanium construction, more scratch-resistant than the previous generation
- Around a week of battery, so charging stays a weekly habit rather than a nightly one
- Works with both Android and iOS, and integrates with 40+ apps
- $50 more than the Ring 4 for changes that are mostly physical
- Ring 5 uses its own sizing — your Ring 4 size does not carry over (see sizing below)
- Still requires the $5.99/month membership for the insights most people buy it for
2. Oura Ring 5 — Gold
Why it's here: Identical hardware to the Silver — same sensors, same battery, same software. You are paying $100 for the finish. That is a defensible thing to pay for on a device you wear every day for years and that sits next to your other jewellery, but be clear that it buys you nothing functional.
- Same sensors, battery and features as the Silver
- Warmer tone that sits better alongside gold-toned watches and rings
- $100 premium over the Silver for finish alone
- Any PVD-style coating shows wear over years of daily contact
3. Oura Ring 4 — Silver
Why it's here: The previous generation, still sold and still fully supported — and at $50 less than the Ring 5 it is the better buy for a lot of people. The Ring 4 tracks the same core metrics and receives the same app. What you give up is the size reduction and the rebuilt sensors. If you have never worn a smart ring and are not certain you will tolerate sleeping in one, spending less to find out is the sensible move.
- $50 cheaper than the Ring 5 for the same core metric set and the same app
- Still current enough to be sold and supported by Oura directly
- The lower-risk way to find out whether you will actually wear a ring nightly
- Noticeably larger than the Ring 5 — the thing most likely to put you off wearing it
- Does not get the Ring 5's rebuilt sensor hardware
- Same $5.99/month membership requirement
4. Oura Ring 5 Sizing Kit
Why it's here: Buy this before you buy the ring. Oura is explicit that Ring 5 sizing is its own system — it does not match standard jewellery sizes, and it does not match Ring 4 sizes either, so an existing Oura owner cannot simply reorder the same number. Wear the sizer for a full 24 hours before deciding; fingers change size through the day and a ring that fits at 9am can be tight by evening. Oura also offers a free sizing kit direct from its own site, so buy this Amazon version only if you want it faster or as a gift.
- Removes the main reason smart rings get returned
- Ring 5 sizing differs from both jewellery sizing and Ring 4 sizing, so this is not optional
- Doubles as a gift mechanism — the recipient sizes themselves, then orders
- Oura gives the sizing kit away free on its own website
- Adds a few days before you can order the ring itself
Sizing: The Ring 5 Changed It, and It Will Catch Existing Owners Out
Ring 5 uses its own sizing system. Oura states plainly that it matches neither standard jewellery sizing nor the sizing used by earlier Oura generations. If you already own a Ring 4 and assume you can reorder the same number, you will very likely order the wrong ring — this is the single most common way this purchase goes wrong.
Size before you buy, without exception. Oura gives the sizing kit away free from its own website; the $10 Amazon kit exists mainly so you can gift it, or get it faster.
Two things worth knowing when you do size:
- Wear the sizer for a full 24 hours. Fingers swell and shrink through the day and with temperature. A ring that fits comfortably in the morning can be uncomfortably tight by evening, and a ring sized in the evening can spin loose overnight — which costs you sensor contact and therefore data quality.
- The sizer should not rotate freely as you move. That is Oura’s own guidance and it is the practical test. Most people end up half a size to a full size larger on the index or middle finger than on the ring finger.
Oura Membership: Is the $5.99/Month Worth It?
Every generation — Ring 5, Ring 4 and the older Gen3 — requires an Oura Membership for the features most people are actually buying. Without it the ring still records data, but the app holds back the interpretation. With it you get:
- Sleep stages (Light, Deep, REM)
- Readiness Score and trends
- Cycle insights and pregnancy tracking
- Stress monitoring and resilience
- Personalized health reports
- Apple Health, Google Health Connect, Strava integrations
Pricing at last check is $5.99/month, and every new ring includes the first month. Budget for it as part of the purchase rather than a surprise afterwards: over three years the membership costs roughly half again what the ring did, which changes the comparison against a one-off-purchase tracker considerably. If you object to subscriptions on principle, that objection is the strongest argument against Oura and we would not try to talk you out of it.
Frequently Asked Questions
Should I upgrade to the Ring 5?
From a working Ring 4, probably not yet. The size reduction is real and it is the best argument for the Ring 5, but Oura’s accuracy improvement is a manufacturer claim with no independent validation we can point to. From a Gen3 with degraded battery, or from no ring at all, buy the Ring 5. Either way, budget for a new sizing kit — Ring 5 sizing does not match earlier generations.
How long does the battery last?
Oura states around a week for the Ring 5, and up to 8 days for the Ring 4 on default settings. Heavy workout tracking shortens both. In practice either means charging becomes a weekly habit rather than a nightly one, which is the meaningful difference against a smartwatch.
What’s the difference between the Silver and Gold finishes?
Functionally identical. Different finishes only. On Amazon at last check: Silver, Stealth and Brushed Silver run $349, and Gold is $399. Finish availability rotates, so buy whichever of the two tiers you prefer the look of. All finishes share the same 18 sensor pathways, 8-day battery, and firmware.
Does Oura Ring 4 work without a subscription?
Limited features only. Membership ($5.99/mo) unlocks sleep stages, Readiness Score, stress tracking, and most insights. New rings include 1 free month.
Can I wear the Oura Ring in the shower?
Yes. Both Ring 4 and Gen3 are water resistant to 100 meters. Safe for showers, swimming, and most water activities.
What size Oura Ring should I get?
Order the free Oura Sizing Kit first. It ships in 24–48 hours and includes dummy rings in all sizes to wear for 24 hours before you commit.
Is Oura Ring 4 better than Apple Watch for sleep tracking?
Yes for sleep — Oura’s ring form factor doesn’t interrupt sleep like a watch and the temperature sensors are more accurate than Apple Watch’s wrist measurement. Apple Watch wins for workout/activity tracking and notifications.
Does the Oura Ring 4 track HRV?
Yes. Heart rate variability is tracked overnight as part of the Readiness Score, and the Ring 4’s 18 signal pathways measure HRV more accurately than Gen3.
Who Should Skip the Oura Ring Entirely
The Oura Ring is a very good sleep-and-recovery tracker, but it’s the wrong tool for a lot of people. If you’re any of the three buyer types below, we’d point you elsewhere first:
- Training-strain-first users. If your primary reason for wearing a tracker is workout load, HR zones during exercise, or programming a training block, Oura’s workout tracking is basic — the ring is optimized for continuous recovery signal, not real-time cardio metrics. A WHOOP (strain-and-recovery scoring built for athletes), a Garmin (built-in display, richer workout metrics, longer battery), or a plain chest strap paired with an app will serve you better. See our Oura vs WHOOP vs Garmin comparison.
- Users who work with their hands. Welders, mechanics, carpenters, warehouse workers, hospital ICU staff — jobs that impact, crush, or chemically expose the ring will damage it. Titanium is durable but not invincible, and rings block PPE like sterile gloves. A wrist-worn tracker (Garmin, Apple Watch, Fitbit) or a chest strap is a better long-term fit.
- Users unwilling to pay a subscription indefinitely. The $5.99/mo membership is required for the useful features (sleep stages, Readiness, cycle insights). If a subscription for wearable data is a deal-breaker, look at RingConn Gen 2, Ultrahuman Ring Air, or the Samsung Galaxy Ring — all no-subscription. Our smart ring comparison has the tradeoffs.
Honest Limitations of This Guide
- We have not personally run a 60-day head-to-head validation study against a research-grade polysomnography rig. We’re leaning on Oura’s published validation work (Kinnunen et al. 2020 Physiological Measurement against PSG) and independent testing summaries, not our own PSG data.
- Ring-vs-band accuracy comparisons are firmware-version-sensitive. Every major firmware update shifts sleep-stage classification and HRV smoothing behavior; a study published in 2023 does not necessarily reflect how the Ring 4 performs on 2026 firmware.
- Individual finger sizing and skin tone affects PPG signal quality — the optical heart-rate sensors read differently on lighter vs darker skin and on differently sized fingers. Aggregate accuracy claims may not map cleanly to your specific wear.
- We can’t independently audit Oura’s cloud algorithms. What the app shows you is a proprietary computation on top of the raw sensor data, and neither we nor most researchers can inspect that pipeline.
Final Thoughts
For new buyers in 2026, the Oura Ring 4 Silver at $349 is the clear pick — same price as Ring 4 Stealth and Brushed Silver, and cheaper than every direct-from-Oura option. Choose Stealth for the most discreet daily wear, Brushed Silver for professional/scratch-hiding, or Gold ($399) if you want the finish to matter.
If you can find a Gen3 Horizon discounted to $250 or less, it is still a workable budget entry. At full retail, Ring 4 wins.
Pair your Oura with an Apple Watch for activity tracking, or check our CGM guide for metabolic health tracking that complements Oura’s sleep and HRV data.
Cross-Shopping a Whoop or Garmin?
The Oura Ring is excellent, but it’s not the only serious recovery wearable. If you’re comparing across brands — especially Whoop’s strain-and-recovery scoring or Garmin’s longer battery and built-in display — see our three-way comparison:
- Oura vs Whoop 5 vs Garmin Venu 3 — measurable comparison of HRV methodology, PSG-validated sleep accuracy, battery life, and pricing across all three platforms, plus a 3-question decision tree for picking
Comparing Other Smart Rings to Oura?
The Oura Ring 4 is still great, but the 2024–2025 wave of competitors closed most of the accuracy gap — and several don’t require a subscription:
- Best Smart Rings (Not Just Oura) — head-to-head against RingConn Gen 2, Ultrahuman Ring Air, and Samsung Galaxy Ring; the subscription math; a decision tree by ecosystem
Last updated: July 04, 2026. Prices and availability shown are accurate as of this time and are subject to change. As an Amazon Associate, DeskFitPro earns from qualifying purchases.
