Smart Rings / Ultrahuman Ring PRO (2026) vs Oura Ring 4 (2024)
Ultrahuman Ring PRO (2026) vs Oura Ring 4 (2024)
Ultrahuman Ring PRO (2026)
15-day battery and no subscription — until you notice AFib is a paid add-on.
Wins overall by 0.4 points
Quick Verdict
The Ultrahuman Ring PRO (2026) is the stronger all-round pick, ahead by 0.4 points. 15-day battery and no subscription — until you notice AFib is a paid add-on.
The Ultrahuman Ring PRO (2026) and Oura Ring 4 (2024) are both closely matched smart Ring models, and the Oura Ring 4 (2024) is $230 cheaper than the Ultrahuman Ring PRO (2026) ($249 vs $479). On Subscription Freedom, the Ultrahuman Ring PRO (2026) leads (7.0 vs 2.0/10) — how much of the ring keeps working with no recurring payment — the category's defining trap. On Battery Life, the Ultrahuman Ring PRO (2026) leads (9.5 vs 7.0/10) — real days between charges with continuous sensing on, plus what the charging case adds. On App & Data, the Oura Ring 4 (2024) leads (9.0 vs 7.5/10) — app stability, insight depth, platform parity and whether you can get your history out. Overall, the Ultrahuman Ring PRO (2026) scores 7.8/10 across our 8 scoring categories versus 7.4/10 for the Oura Ring 4 (2024). Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Ultrahuman Ring PRO (2026) | Oura Ring 4 (2024) |
|---|---|---|
| Price | $479.00 | $249.00 |
| Release Year | 2026 | 2024 |
| Battery Life (claimed) (days) | 15✓ | 8 |
| Battery, In Practice | Ultrahuman claims up to 15 days in standard mode, and 'up to 45 days' only when you count recharges held in the PRO charging case. Independent long-term battery testing under continuous SpO2 and temperature sensing was not available at the time of writing — the ring has only been shipping in the US for weeks. | Oura publishes 5-8 days and states outright that it varies with ring size, app settings and activity level. Smaller sizes are nearer 5. Charging takes 20-80 minutes depending on how flat it is. |
| Subscription | No subscription for your core data — sleep, recovery, movement, stress and circadian insights are included. But the clinical-sounding features are sold as optional annual PowerPlugs at $24-$39 each, and AFib detection is one of them. 'No subscription' and 'AFib included' are not the same sentence. | Required in practice. $5.99/month or $69.99/year after one free month, on exactly the same terms as the Ring 5 — the membership is per account, not per ring, so upgrading later does not cost a second subscription. |
| 3-Year Cost of Ownership ($) | 479 | 458.97✓ |
| Sizes Offered | US 5-14, no half sizes. Ultrahuman states its sizes may differ slightly from standard US ring sizes. | US 4-15, no half sizes — the broadest range here, and the reason to buy the older generation if your finger is very small or very large |
| Sizing Kit | Complimentary sizing kit with plastic sizers in sizes 5-14, shipped with the order. | Free plastic sizing kit ships before the ring; wear the sizer at least 24 hours including overnight. Budget about a week before the real ring is ordered. |
| Returns & Size Exchange | Not published on the pages reviewed. Check Ultrahuman's US terms at checkout before ordering a size. | Oura does not publish a return window on its warranty page. The 1-year limited warranty excludes scratches, dents and batteries, and secondhand purchases from unauthorised resellers are not covered at all. |
| Measured vs Inferred | PPG optical sensing plus skin temperature and motion, processed by an on-ring dual-core chip with on-chip machine learning. AFib detection, metabolic insight for GLP-1 users, ovulation tracking, snoring analysis and migraine insight are all software PowerPlugs layered on the same sensors — buying more PowerPlugs does not add hardware. | Green plus infrared LEDs for continuous heart rate and HRV, red plus infrared for blood oxygen reported overnight rather than continuously, an NTC skin-temperature sensor and an accelerometer. Readiness, Stress and Resilience are derived scores on top of those signals. |
| FDA Clearance | Not published by Ultrahuman for the Ring PRO or its AFib PowerPlug in the sources reviewed. Coverage of the US relaunch describes AFib detection as a paid PowerPlug and does not cite an FDA clearance. | None published. Oura markets the ring and app as general wellness, not as a medical device. |
| Water Rating | 100m / 328ft | Water resistant to 100m/328ft |
| Phone Support | iOS and Android | iOS and Android, full feature parity |
| Charger & Data Export | Standard charger and a 1m USB-C cable in the box; the PRO Charging Case is a $100 accessory (bundled into the $479 configuration). Export: not published by the manufacturer, though 250 days of history is retained on the ring itself. | Proprietary size-specific dock plus USB-C cable in the box; the Ring 5 charger is a different part. Export: not published as a one-click history download; Oura documents a personal-access-token Cloud API. |
| Warranty | 12 months | 12 months |
| Colors | Bionic Gold, Space Silver, Aster Black, Raw Titanium | Silver, Black, Brushed Silver, Stealth, Gold, Rose Gold |
Category Scores
Subscription Freedom
The Ultrahuman Ring PRO (2026) leads clearly here, 7.0 against 2.0 — a 5.0-point margin on how much of the ring keeps working with no recurring payment — the category's defining trap. If that is what you are buying for, the Oura Ring 4 (2024) does not close the gap elsewhere.
Sleep Tracking
The Oura Ring 4 (2024) leads clearly here, 9.3 against 8.0 — a 1.3-point margin on sleep staging depth, overnight accuracy and how usable the morning report is. If that is what you are buying for, the Ultrahuman Ring PRO (2026) does not close the gap elsewhere.
Health Sensing
The Ultrahuman Ring PRO (2026) and Oura Ring 4 (2024) are level here, at 8.3/10 each. what the sensors genuinely measure — heart rate, SpO2, temperature, ECG — rather than infer is not what separates these two — look to the categories where the scores diverge.
Battery Life
The Ultrahuman Ring PRO (2026) leads clearly here, 9.5 against 7.0 — a 2.5-point margin on real days between charges with continuous sensing on, plus what the charging case adds. If that is what you are buying for, the Oura Ring 4 (2024) does not close the gap elsewhere.
Sizing & Fit
The Oura Ring 4 (2024) leads clearly here, 8.5 against 8.0 — a 0.5-point margin on how many sizes exist, how good the sizing kit is, and how forgiving the exchange policy is. If that is what you are buying for, the Ultrahuman Ring PRO (2026) does not close the gap elsewhere.
App & Data
The Oura Ring 4 (2024) leads clearly here, 9.0 against 7.5 — a 1.5-point margin on app stability, insight depth, platform parity and whether you can get your history out. If that is what you are buying for, the Ultrahuman Ring PRO (2026) does not close the gap elsewhere.
Durability
The Ultrahuman Ring PRO (2026) and Oura Ring 4 (2024) are level here, at 7.5/10 each. finish scratch resistance, water rating in practice, and whether the finish is warrantied is not what separates these two — look to the categories where the scores diverge.
Value
The Oura Ring 4 (2024) leads clearly here, 7.5 against 6.5 — a 1.0-point margin on what the ring delivers against its total cost of ownership, not just its sticker price. If that is what you are buying for, the Ultrahuman Ring PRO (2026) does not close the gap elsewhere.
Best For
Choose the Ultrahuman Ring PRO (2026) if…
- • Subscription Freedom matters most to you — the Ultrahuman Ring PRO (2026) scores 7.0/10 here (how much of the ring keeps working with no recurring payment — the category's defining trap).
- • Battery Life matters most to you — the Ultrahuman Ring PRO (2026) scores 9.5/10 here (real days between charges with continuous sensing on, plus what the charging case adds).
- • Your main use case is no-subscription or heart-health.
Choose the Oura Ring 4 (2024) if…
- • App & Data matters most to you — the Oura Ring 4 (2024) scores 9.0/10 here (app stability, insight depth, platform parity and whether you can get your history out).
- • Sleep Tracking matters most to you — the Oura Ring 4 (2024) scores 9.3/10 here (sleep staging depth, overnight accuracy and how usable the morning report is).
- • Value matters most to you — the Oura Ring 4 (2024) scores 7.5/10 here (what the ring delivers against its total cost of ownership, not just its sticker price).
- • You want to spend less — it's $230 cheaper.
- • Your main use case is womens-health.
Pros & Cons
Ultrahuman Ring PRO (2026)
Pros
- +15-day claimed battery and 45 days with the case — nothing else here is close
- +250 days of on-ring storage means it keeps working through a phone loss, a trip or a long stretch offline
- +ProRelease cutaway is the only answer any of these brands has to a swollen finger and a ring that cannot come off
- +Core sleep, recovery and stress data carries no recurring fee
Cons
- −AFib detection is a paid annual PowerPlug ($24-$39), so the 'no subscription' pitch does not cover the feature people most want
- −Ship dates keep moving — TechTimes said 20 June, gadgetsandwearables said 10 August, and Ultrahuman's own page now says 15 September onwards
- −Ultrahuman was banned from US import in October 2025 over Oura's patent; the Ring PRO is a redesign, and that history is a real supply risk
- −$479 as configured is the most expensive ring here, and the $399 version does not include the charging case
- −No FDA clearance is published for the AFib PowerPlug in the coverage of the US relaunch
Oura Ring 4 (2024)
Pros
- +Sizes 4 to 15 — if the Ring 5's 6-13 window excludes you, this is the Oura that fits
- +Now routinely $249 in silver or black, $100 under its own list price, for sensing that is a generation behind at most
- +Recessed sensors mean no protruding domes pressing into the finger, unlike the Circular Ring 2
- +Same app, same membership, same iOS/Android parity as the Ring 5
Cons
- −The $5.99/month membership still applies, so three years costs $458.97 even at the discounted hardware price
- −Noticeably chunkier than the Ring 5 — that is the whole reason the Ring 5 exists
- −Discounted stock is concentrated in Silver and Black; Gold and Rose Gold still list at $499
- −Warranty covers manufacturing defects only, not the scratches titanium picks up in normal wear
- −Amazon listings are per size and per colour, so the ASIN you click must match the size you actually need
Shop by Need
FAQs
Is the Ultrahuman Ring PRO (2026) or Oura Ring 4 (2024) better overall?+
Based on our 8-category scoring, the Ultrahuman Ring PRO (2026) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Subscription Freedom, the Ultrahuman Ring PRO (2026) or the Oura Ring 4 (2024)?+
The Ultrahuman Ring PRO (2026) scores higher on Subscription Freedom (7.0/10 vs 2.0/10) — how much of the ring keeps working with no recurring payment — the category's defining trap.
Which is better for Battery Life, the Ultrahuman Ring PRO (2026) or the Oura Ring 4 (2024)?+
The Ultrahuman Ring PRO (2026) scores higher on Battery Life (9.5/10 vs 7.0/10) — real days between charges with continuous sensing on, plus what the charging case adds.
Which is better for App & Data, the Ultrahuman Ring PRO (2026) or the Oura Ring 4 (2024)?+
The Oura Ring 4 (2024) scores higher on App & Data (9.0/10 vs 7.5/10) — app stability, insight depth, platform parity and whether you can get your history out.
Which is better for Sleep Tracking, the Ultrahuman Ring PRO (2026) or the Oura Ring 4 (2024)?+
The Oura Ring 4 (2024) scores higher on Sleep Tracking (9.3/10 vs 8.0/10) — sleep staging depth, overnight accuracy and how usable the morning report is.
Is the Ultrahuman Ring PRO (2026) worth the price difference over the Oura Ring 4 (2024)?+
The Oura Ring 4 (2024) is the cheaper option at $249 versus $479. Whether the pricier model is "worth it" depends on how much you value its lead in Subscription Freedom.
Which is better suited to my use case?+
The Ultrahuman Ring PRO (2026) is the better fit if you mainly care about no-subscription or heart-health. The Oura Ring 4 (2024) is the better fit for womens-health.
What's the warranty on the Ultrahuman Ring PRO (2026) vs the Oura Ring 4 (2024)?+
The Ultrahuman Ring PRO (2026) ships with a 12-month warranty; the Oura Ring 4 (2024) ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.