Oura Ring 4 Review: I Wore This Smart Ring for 3 Months

Oura Ring 4 Review: Quick Verdict

Feature	Details
Product	Oura Ring 4
Price	$349 – $499 (depending on finish)
Subscription	$5.99/month after first month free
Battery Life	7–8 days (I got 7 days consistently)
Best For	Sleep tracking, recovery, overall wellness
Not For	Serious athletes needing real-time workout data
My Rating	9.2/10

Why I Bought the Oura Ring 4 (And Why You’re Here)

Look, I’ll shoot you straight. I’ve been tracking my health for years. Wore an Apple Watch until I got sick of charging it every night and feeling buzzes on my wrist 24/7. Then I heard about the Oura Ring 3 from a buddy in my gym, tried it, and wore it for two years straight.

When Oura dropped the Gen 4 in October 2024, I pre-ordered the same day. I’ve now worn this ring for over 90 days straight—sleeping, showering, lifting, you name it. This isn’t some unboxing-and-first-impressions fluff. This is the real deal, long-term review you actually need.

If you’re wondering whether to drop $349 on this thing, keep reading. I’ll tell you exactly where it shines and where it falls flat.

Unboxing and First Impressions

The box shows up looking slick—typical Oura quality. Inside you get:

The ring itself
Charging stand (USB-C cable included, no wall brick)
Quick start guide

But here’s the thing most reviews skip: you need to order the sizing kit first. Oura sends you 12 plastic rings (sizes 4 through 15). Wear each potential size for a full day. I made the mistake of rushing this with my Gen 3 and ended up with a loose fit that gave sketchy data.

For Gen 4, I wore the size 10 on my right index finger for 24 hours. Had to bump up to size 11 because my fingers swell during humid Dallas summers. Take your time with this step—it’s free and saves you the return headache.

Design and Comfort: They Finally Fixed It

Here’s the honest truth: the Oura Ring 3 had those annoying sensor bumps inside. They’d press into my finger during deadlifts and leave temporary marks. Not painful, but noticeable.

The Oura Ring 4? Completely different story.

The sensors are now recessed—basically flush with the inside of the ring. When I first put it on, I kept checking if I was wearing it right because I literally couldn’t feel it. That’s how smooth it is.

I wear mine 24/7. Only take it off to charge every 7-8 days and when I slap on heavy lotion after showering. The titanium build feels premium. I got the silver finish, and after three months, I’ve got some micro-scratches if I hold it under bright light. But honestly? That’s normal for any metal ring you wear daily. My buddy got the stealth black and his scratches show more, so keep that in mind.

Weight-wise, it’s lighter than the Gen 3. I’m talking 0.12 to 0.18 ounces depending on your size. You genuinely forget you’re wearing it. I’ve caught myself panicking thinking I lost it, only to realize it’s been on my finger the whole time.

How I Tested This Thing (Real Data, Not Marketing Fluff)

I didn’t just wear this ring to the office and call it a day. Here’s what I actually did:

Sleep tracking: 90+ nights of data, including nights with alcohol, late meals, and terrible sleep
Workouts: 25+ gym sessions (lifting, cardio, CrossFit-style WODs)
Sick day test: Caught a cold in January—wanted to see if the ring caught it before I felt symptoms
Comparison test: Wore my buddy’s Apple Watch Series 10 on one wrist, Galaxy Ring on the other for one week
Battery drain test: Let it run from 100% to dead without charging

This is real-world usage, y’all. Let’s get into what I found.

Sleep Tracking: Where Oura Absolutely Dominates

This is the main reason I keep coming back to Oura. The sleep tracking is scary accurate.

Every morning I wake up, open the app, and get my sleep score (0-100). Here’s what a good night looks like for me:

Score: 87
Time in bed: 7h 48m
Sleep time: 7h 22m
REM sleep: 1h 45m
Deep sleep: 1h 20m
Resting heart rate: 48 bpm
HRV: 42 ms

Now here’s the real test: one night I had three bourbons watching the Cowboys game (don’t judge). Next morning my sleep score tanked to 68. Resting heart rate jumped to 58 bpm. HRV dropped to 28 ms. The ring showed me exactly what the alcohol did to my recovery.

Accuracy check: I compared Oura’s data against my wife’s Apple Watch and a friend’s Galaxy Ring. For four-stage sleep classification (wake, light, deep, REM), Oura consistently matched closest to how I actually felt waking up. PCMag’s lab tests back this up—they found Oura hits 79% agreement with medical-grade sleep studies, which is best in class for consumer wearables.

The ring detects your body temp dropping as you fall asleep, then rising before you wake. It’s wild how it knows. If you toss and turn, it catches those micro-wakeups that other rings miss.

Readiness Score: Should You Train or Chill?

This became my favorite metric. The readiness score (also 0-100) tells you if your body is recovered enough to push hard or if you need to take it easy.

It combines:

Your sleep data from last night
Heart rate variability trends
Resting heart rate
Body temperature
Previous activity levels

Example from my log: After a heavy leg day plus poor sleep, my readiness showed 72 with a note saying “your HRV is below baseline—consider active recovery.” I took the hint, did 30 minutes of stretching and a light walk instead of deadlifts. Felt way better.

When I got sick in January, my readiness started dropping two days before I felt symptoms. Temperature was up 0.3°F, HRV was down. The app asked “how are you feeling?” and suggested Rest Mode, which pauses your activity goals. That’s smart design.

Activity Tracking: The Weak Spot (Be Honest Here)

I’m gonna keep it real with you—if you’re a marathon runner or competitive CrossFitter who needs live pace data and heart rate zones mid-workout, this ring ain’t it.

Here’s what it does well:

Automatically detects walks and runs (pretty accurate)
Tracks steps throughout the day
Gives you a daily activity goal based on your recovery
Manual workout logging works fine

Here’s where it struggles:

Didn’t auto-detect my weightlifting sessions once
Forgot to log my yoga class (I had to add it manually)
GPS for outdoor runs is okay but not Garmin-level accurate

But here’s the thing—that’s not really the point. I don’t want another screen buzzing at me during sets. I want to know if I’m overtraining overall. For that purpose, it works great. My activity score tells me if I’m being a lazy bum or pushing too hard.

The app tracks 40+ workout types manually. If you remember to start them, the data is solid. But if you’re the type who wants everything automatic, this might frustrate you.

Cycle Tracking: What My Female Friends Tell Me

I can’t test this personally (I’m a dude), so I asked my friend Sarah who’s worn the ring for 6 months. Here’s her take:

“The cycle tracking is legit. I used to guess when my period would start. Now Oura predicts it within a day because it tracks my temperature trends. The fertile window feature helped me understand my cycle way better than any app ever did. My only complaint? You have to manually log your period start and end dates. I wish it could auto-detect somehow, but I get why that’s tough.”

So if you’re in the market for women’s health tracking, this is a major selling point.

Battery Life: Better Than Any Smartwatch

Oura claims 8 days. In my testing:

With blood oxygen sensing on: 7 days exactly
Without SpO2: 7 days and about 6 hours

Charging takes 80 minutes from dead to full. The charging dock is redesigned—easier to line up than Gen 3. Only downside? You need that specific dock. Lose it and you’re stuck ordering a replacement. I keep mine in my bathroom and charge while showering every 7 days.

Compare that to my friend’s Apple Watch that needs charging every night. Night and day difference.

The App: Massively Improved

The old Oura app felt cluttered. The new one (redesigned for Gen 4) is clean. Three main tabs:

Today: Your scores at a glance—Readiness, Sleep, Activity, Stress
Vitals: All your raw data (HRV, RHR, temp, respiratory rate)
My Health: Long-term trends and reports

Navigation is intuitive. Data loads fast—like 5 seconds to sync a full day. You can tag things like “alcohol,” “caffeine after 5pm,” or “sick” to spot patterns over time. I noticed my sleep score drops 12 points on average when I eat late. Wouldn’t have known that without tagging.

The Stress management feature is new. It shows you how much time you spent in stressed, relaxed, and restorative states throughout the day. Eye-opening to see how meetings spike my stress.

Accuracy: Numbers Don’t Lie

I’m a numbers guy, so here’s what independent testing shows and I’ve confirmed:

Resting heart rate: 99.9% reliable vs medical ECG
Heart rate variability: 98.4% reliable vs medical ECG
Temperature sensing: 99%+ accurate, detects changes as small as 0.13°C
Sleep staging: 79% agreement with lab-grade sleep studies (best in class)

My personal experience matches this. When I check my pulse manually, the ring’s within 1-2 beats. When I feel feverish, the temperature graph confirms it.

What I Don’t Like (Being Real With You)

No product’s perfect. Here’s what bugs me:

1. The subscription fee. $5.99/month adds up. Over three years, that’s $215 extra on top of the $349 ring. Oura could include this in the price. Competitors like Samsung and RingConn don’t charge monthly. That said, you get regular new features and app updates. Decide if that’s worth it to you.

2. Manual workout logging. I genuinely forget to start workouts half the time. Wish it auto-detected lifting like it does walks.

3. Scratches on certain finishes. My silver shows micro-scratches. My friend’s stealth black shows more. Gold and rose gold are softer. If scratches will bother you, get silver or brushed silver.

4. No screen. This is a pro for some, con for others. You can’t glance at stats during workouts. You need your phone.

5. Can’t share charger. Traveling without the dock means no charging. I wish they used standard wireless charging.

Oura Ring 4 Review: Oura Ring 4 vs Competition

vs Samsung Galaxy Ring ($399)

Samsung pros: No subscription, slightly lighter, works best with Samsung phones
Oura pros: Better sleep tracking accuracy, more size options, better app experience
Verdict: If you have a Samsung phone and hate subscriptions, get Galaxy. If you want best-in-class sleep data, get Oura.

vs Apple Watch Series 10 ($429)

Apple pros: Screen, calls, texts, GPS, ECG, fall detection
Oura pros: 8-day battery, comfortable for sleep, no screen distraction
Verdict: They’re different tools. I wear both. Apple for workouts and connectivity, Oura for sleep and recovery.

vs RingConn Gen 2 ($299)

RingConn pros: No subscription, cheaper, similar features
Oura pros: Better app, more accurate sleep tracking, larger user base
Verdict: RingConn is the budget alternative. Oura is the premium choice.

Who Should Buy Oura Ring 4?

Buy this if:

You care deeply about sleep quality
You want to understand your recovery and readiness
You’re tired of charging devices daily
You want cycle tracking that actually works
You prefer screen-free wellness tracking

Skip this if:

You need live workout stats and GPS
You hate monthly subscriptions
You’re on a tight budget (RingConn exists)
You want a smartwatch replacement (it’s not that)

Oura Ring 4 Review: Pricing and Where to Buy

Finish	Price	Amazon Link
Silver / Black	$349	Check Price on Amazon
Brushed Silver / Stealth	$399	Check Price on Amazon
Gold / Rose Gold	$499	Check Price on Amazon
Ceramic finishes	$499+	Check Price on Amazon

Important: Order the free sizing kit first from Oura or Amazon. Wear testers for 24 hours. Then order your actual ring. Trust me on this.

Subscription is $5.99/month after first free month. You can buy annual for $69.99 (save about $2).

FAQs: Real Questions You’re Asking

Q: Can I wear Oura Ring 4 in the shower?
A: Yes, it’s water resistant to 328 feet. I shower with mine daily. Just dry it after.

Q: Does Oura Ring 4 work with iPhone and Android?
A: Yes, works with both. App is equally good on iOS and Android now.

Q: How do I know my correct ring size?
A: Order the free sizing kit. Wear each potential size for 24 hours. Your fingers swell throughout the day, so test properly.

Q: Is the subscription really necessary?
A: Yes. Without it, you only see your daily scores—no detailed data, no trends, no insights. You need membership for the full experience.

Q: Can I wear it while lifting weights?
A: Yes, and the recessed sensors make it comfortable. I do deadlifts, pull-ups, everything. No issues. Use lifting straps if worried about scratches.

Final Verdict: Should You Buy It?

After 90+ days of wearing this ring through workouts, sickness, travel, and terrible sleep nights, here’s my honest take:

Oura Ring 4 is the best smart ring you can buy right now. The sleep tracking is unmatched. The comfort is finally there. The app gives you insights that actually improve how you live.

But it’s not for everyone. The subscription stings. The workout tracking isn’t for serious athletes. And $349 is real money.

For me? I’m keeping it on my finger. The data helped me fix my sleep schedule, recover smarter, and even caught sickness before I felt it. That’s worth the price.

If you’re ready to understand your body better, grab it here. If you’re still unsure, get the sizing kit first—it’s free and takes the guesswork out.

👉 Check Latest Price on Amazon (Affiliate Link)

*I tested this ring myself for 3+ months. All opinions are my own. Some links in this review are affiliate links—if you buy through them, I earn a small commission at no extra cost to you. I only recommend products I genuinely believe in. Last updated: March 2026.*

Disclosure: I may earn a commission if you purchase through links in this review. This does not affect my honest opinion. All products were tested personally.

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