The 2026 flagship — 40% slimmer with genuinely upgraded sensors, and still the most accurate overnight HRV and sleep tracker. The mandatory subscription remains the only real catch.
Best for the most accurate overnight HRV and sleep data in the slimmest, most comfortable always-on ring — for buyers coming fresh, not necessarily Ring 4 owners.
The Oura Ring 5 (launched June 2026) is the new generation of the category leader. It is ~40% slimmer than the Ring 4 (6.09mm × 2.28mm) with a 6–9 day battery, and — the part that matters — redesigned sensors: stronger LEDs, low-profile domes and 12 signal pathways for cleaner contact and more consistent readings across finger types and skin tones. Sleep and overnight HRV remain best in class. The catch is unchanged: full data needs the monthly membership, and hardware is $399 ($499 for premium finishes). Note that the headline new software features (live workout tracking, women’s health, bloodwork import) also roll out to the Ring 4 and Gen3 — so the Ring 5’s real advantage over the Ring 4 is the sensors and the fit, not the app.
Як ми оцінювали: Evidence-based assessment — scored from Oura’s specifications, independent 2026 launch reviews and prior-generation validation literature. Not hands-on tested by ONDA.
Overnight RMSSD remains the closest consumer match to an ECG chest strap; the redesigned sensors and 12 signal pathways improve contact consistency across skin tones and finger types. Daytime/exercise readings still drift under motion.
Якість сенсора та сигналу
8.5
Redesigned sensor stack: stronger LEDs and low-profile domes for better skin contact. A genuine hardware step over the Ring 4, not just a slimmer shell.
Точність відстеження сну
8.5
Best-in-class sleep staging carries over, with slightly more consistent overnight tracking reported; occasional gaps in sleep/stress data still show up in hands-on reviews.
Доступ до даних та експорт
6.5
Unchanged from the Ring 4 — a developer API exists, but raw beat-to-beat data is limited and deeper analysis sits behind the membership.
Носимість та батарея
9.0
~40% slimmer and lighter than the Ring 4 (6.09mm × 2.28mm) with a 6–9 day battery — the most comfortable always-on ring in the category. Narrower size range (6–13) than the Ring 4.
Застосунок і софт
8.5
The same polished, explanatory app; new features (live workout tracking, women’s health, lost-ring finder, lab/bloodwork import) arrive here — but also come to the Ring 4 and Gen3.
Ціна та цінність
6.0
Hardware $399 ($499 premium finishes) plus a mandatory ~$6/month membership — the highest entry in the ring field, and you never fully own the data.
Плюси
+Genuinely upgraded sensors — better contact across skin tones and finger types
+~40% slimmer and lighter than the Ring 4, 6–9 day battery
+Still the closest consumer match to ECG-grade overnight HRV and the best sleep staging
+Clear, educational app
Мінуси
−Advanced data still requires a recurring monthly membership
−The headline new software features also come to the Ring 4 — less reason to upgrade if you own one
−Daytime and exercise HRV remain unreliable under motion
−$399/$499 is the priciest entry in the ring category, and there is no display
Ціна: $399 $499 premium finishes; + ~6 USD/month membership required for full data (станом на 2026-09-06)
Where it leads
For a clean overnight HRV signal and validated sleep staging, the Oura Ring 5 is the strongest consumer device of 2026 — the same lead the Ring 4 held, now on redesigned sensors. Stronger LEDs, low-profile sensor domes and 12 signal pathways improve skin contact, which is where a finger-worn optical sensor either wins or loses its reading, and reviewers report more consistent tracking across skin tones and finger types.
What actually changed vs the Ring 4
Two real things: the sensors, and the fit. The Ring 5 is about 40% slimmer and lighter (6.09mm × 2.28mm) with a longer 6–9 day battery. What did not change the equation is the software — Oura is rolling the new features (live workout tracking, women’s health, lost-ring finder, lab/bloodwork import) out to the Ring 4 and Gen3 as well. So if you already own a Ring 4, the Ring 5’s advantage is narrower than it looks: better sensors and a slimmer body, not new app capabilities. See the full Oura Ring 5 vs Ring 4 breakdown.
The catch
Unchanged, and still the main mark against it: the ring is only half the purchase. Without the monthly membership the app collapses to basic scores, raw beat-to-beat data is never fully exposed, and at $399 ($499 for premium finishes) this is the priciest way into a smart ring.
Who it is for
Choose the Oura Ring 5 if you are buying fresh and want the most accurate overnight HRV and sleep in the slimmest thing you can wear around the clock, and the subscription is acceptable. If you already run a Ring 4, you are not missing the app features — upgrade only if the sensors or the slimmer fit genuinely matter to you.
