Oura Ring 4 launched in late 2024 with one big promise: smart sensing for continuous heart rate, no longer limited to sleep tracking. We've worn the Gen 4 for 30+ days to find out if it lives up to the hype — and whether it's worth the $50 premium over the still-excellent Gen 3.
On this page
Our verdict
Oura Ring 4 is the best consumer sleep tracker on the market in 2026, and the best longevity wearable for most users. Smart sensing closes the gap with Apple Watch for daytime heart rate tracking, while keeping the ring form factor that makes Oura the most comfortable 24/7 wearable available. The $349 price + $5.99/month membership is a real cost, but the data quality justifies it.
Unboxing and setup
Oura Ring 4 ships with a sleek charging dock and a small instruction card. The setup process is straightforward: download the Oura app, pair the ring via Bluetooth, and you're tracking within 5 minutes.
The one notable friction point: you should order a sizing kit first. Oura rings don't size the same as jewelry rings — they're wider and need to fit snugly for accurate readings. Oura offers a free sizing kit (you pay shipping) that we strongly recommend using before ordering the ring itself.
Design and comfort
The Gen 4 has the same titanium build as Gen 3, with the same scratch-resistant finish. The new "Brushed Silver" finish (in addition to Silver, Gold, Black, Rose Gold, and Stealth) gives a more understated look that some users prefer.
Comfort is where Oura continues to dominate. The ring is light (around 4-6g depending on size), you forget you're wearing it within a day, and it doesn't interfere with typing, exercise, or sleep. This is the #1 reason to choose Oura over a wrist wearable.
Sleep tracking accuracy
Oura's sleep tracking is the gold standard for consumer wearables. The Gen 4 uses the same sensor array as Gen 3 (PPG heart rate, body temperature, accelerometer) but with improved algorithms. Sleep stage accuracy is comparable to a clinical sleep study for most users — better than any other consumer wearable we've tested.
The Gen 4 also tracks "readiness" — a composite score that combines sleep quality, HRV, resting heart rate, and body temperature. This is the single most useful metric for longevity users: a low readiness score tells you to take it easy that day, a high score tells you to push.
Smart sensing: the big new feature
The headline feature of Gen 4 is "smart sensing" — continuous heart rate tracking throughout the day, not just during sleep. This was the biggest gap between Oura and Apple Watch, and it's now substantially closed.
In practice, smart sensing means you can see your daytime heart rate, workout heart rate, and recovery heart rate in the Oura app — no longer just sleep data. For users who wanted Oura's comfort but Apple Watch's daytime tracking, Gen 4 is the answer.
The implementation isn't perfect. Workout detection is still weaker than Apple Watch (you may need to manually start a workout in the app for accurate tracking). And the continuous heart rate data drains battery faster than Gen 3's sleep-only approach.
Battery life in real-world use
Oura promises 7 days of battery life with Gen 4. In our 30-day wear test, we got 5-7 days depending on how aggressively smart sensing was enabled. With smart sensing on 24/7, expect 5 days. With smart sensing limited to workouts, expect the full 7 days.
The charging dock is excellent — a small puck that fully charges the ring in 60-90 minutes. We made a habit of charging the ring during morning coffee, which kept it above 70% indefinitely.
The Oura app experience
The Oura app is one of the best wearable apps we've used. Clean design, clear data visualization, and meaningful insights (not just raw numbers). The "Readiness" and "Sleep" scores are front and center, with detailed breakdowns available.
Gen 4 introduces new "Symptoms" features — you can log things like illness, stress, or alcohol consumption, and Oura correlates them with your biometrics. Useful for figuring out, for example, that alcohol consistently tanks your HRV for 48 hours.
The $5.99/month membership question
Oura requires a $5.99/month membership for full functionality. The first month is included with the ring. Without the membership, you only see basic sleep and activity data — not the readiness scores, HRV trends, or temperature insights that make Oura valuable.
Over 3 years, the membership adds $216 to the total cost. That's real money. But for users who actually use the data to optimize sleep, training, and recovery, the value is there. If you won't use the data, don't buy Oura.
Gen 3 vs Gen 4: is the upgrade worth it?
If you already own Gen 3, the upgrade to Gen 4 is worth it only if smart sensing matters to you. If you only care about sleep tracking, Gen 3 is still excellent and saves you $50.
If you're buying new, get Gen 4. The smart sensing feature genuinely changes how you use the device — from a "sleep tracker" to a "24/7 health tracker in ring form." The $50 premium over Gen 3 is worth it for almost all new buyers.
See also: Our full Oura Ring Gen 3 review.
The bottom line
Oura Ring 4 is our top longevity wearable for 2026. It nails sleep tracking (still best-in-class), adds meaningful daytime tracking with smart sensing, and remains the most comfortable 24/7 wearable you can buy. The $349 price + $5.99/month membership is real money, but the data quality justifies it for serious longevity users.
Oura Ring 4 (Silver, Size 8)
By Oura · ASIN B0D9WVSZ56
Our favorite longevity wearable. Oura Ring 4 adds smart sensing for全天候 heart rate, fewer charging interruptions, and the most accurate consumer sleep stage data on the market.
- Best-in-class sleep tracking
- Smart sensing 24/7 heart rate
- 7-day battery life
- Comfortable titanium build
- Requires $5.99/mo membership
- Sizing kit step adds friction
- Limited workout detection vs Apple Watch
Best for: Sleep-focused healthspan optimizers who want a discreet wearable
If you already have Gen 3 and don't care about daytime heart rate tracking, skip the upgrade. If you're buying new, get Gen 4 — the $50 premium is worth it.