Oura Ring 4 Review: The Sleekest Health Tracker of 2025

I’ve tried a lot of wearables — from the Apple Watch to Whoop — but the Oura Ring 4 is the first one that doesn’t look like a fitness tracker. After six months of daily use, I can confidently say this little ring has changed how I see my sleep, recovery, and overall health.

Gold Oura RIng 4 on a white hand

Design and Comfort

The first thing you notice about the Oura Ring 4 is how discreet it is. It looks like regular jewelry — lightweight, smooth, and available in colors like silver, gold, black, and stealth.
It’s so comfortable that I often forget I’m even wearing it. Compared to bulkier smartwatches, it’s a total game changer if you want something minimal.

oura irng 4 vs apple watch vs fitbit

What the Oura Ring 4 Tracks

This tiny ring packs serious tech — temperature sensors, LEDs to measure heart rate and oxygen, and an accelerometer to track movement.
It gives you three key daily scores:

  • Sleep Score: How well you rested overnight
  • Readiness Score: How prepared your body is to take on the day
  • Activity Score: How active you were and how balanced your movement is

You also get stress and resilience tracking, and for those interested, Cycle Tracking support is built in.

Oura Ring 4 UI

Sleep Tracking That’s Actually Useful

I used to scroll Instagram the moment I woke up — now I check my Oura app instead.
It tells me exactly when I fell asleep, how long I was in REM, and even how consistent my breathing was.
The sleep score (0–100) gives me an easy summary, while the detailed graphs reveal what’s affecting my rest — late-night caffeine, travel, or stress.

Bonus: it even tracks naps. Whether it’s a 15-minute plane nap or a 30-minute couch crash, the ring picks it up automatically.

Oura Ring 4

Track your sleep, recovery, and overall health in style. The Oura Ring 4 delivers precision insights in a sleek, lightweight design — perfect for everyday wellness.

We earn a commission if you make a purchase, at no additional cost to you.

Readiness and Activity Tracking

The Readiness Score might be my favorite feature.
It basically tells you when to push and when to rest — factoring in your heart rate, sleep quality, and recovery patterns.
When I get a low score, I take a rest day without guilt. When it’s high, I know it’s time to hit the gym harder.

On the activity side, the Oura Ring 4 has improved big time. It accurately detects workouts like boxing, running, or kayaking — something the older model struggled with.

Oura RIng 4 on a athlete

Cycle Tracking and Body Temperature

Even though I don’t personally use cycle tracking (obviously), it’s worth noting how advanced it is.
The ring measures subtle changes in body temperature throughout the month, helping users predict cycles or fertile windows — and it syncs with Natural Cycles, an FDA-cleared fertility app.


Battery Life and Charging

Battery life has gotten better with the Gen 4.
I get around 5–6 days per charge, which is decent considering all the sensors running 24/7.
The one annoyance? The proprietary charging dock. Forget to pack it on a trip, and you’re out of luck.

OURA RING UI SS

Oura Ring 3 vs Oura Ring 4 — What’s New

  • Flat sensors for a smoother fit
  • Smarter app design with adaptive insights throughout the day
  • Better accuracy and faster syncing
  • Longer battery life

If you had the Oura 3, this feels like a solid refinement — not a total redesign, but a much smoother experience overall.


Price and Subscription

The Oura Ring 4 starts at $349, with premium finishes going up to $499.
There’s also a $5.99 monthly subscription for access to all analytics inside the app.
Not the cheapest wearable, but compared to subscription-heavy options like WHOOP, it’s still reasonable.

Pros and Cons

✅ Pros❌ Cons
Lightweight and stylishNo display
Excellent sleep trackingSubscription required
Multi-day battery lifeProprietary charger
Water-resistantPrice varies by metal
Easy setup with sizing kit
Great app experience

Final Verdict

After months of use, I can confidently say — the Oura Ring 4 is worth it.
It’s not trying to replace your smartwatch; it’s quietly collecting the kind of deep health data that helps you understand your body better.
If you care about optimizing your sleep, recovery, and daily performance — without wearing a screen on your wrist — the Oura Ring 4 is hands down the smartest, most discreet health tracker you can buy.

Oura Ring 4

Track your sleep, recovery, and overall health in style. The Oura Ring 4 delivers precision insights in a sleek, lightweight design — perfect for everyday wellness.

We earn a commission if you make a purchase, at no additional cost to you.