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Smart rings have grown from a niche curiosity into a mainstream way to track sleep and recovery, and two names lead the category: the Oura Ring 4 and the Samsung Galaxy Ring. If you are choosing between them, the decision usually comes down to one core split. Oura pairs strong accuracy with a mandatory subscription and works on both iPhone and Android, while the Galaxy Ring skips the subscription entirely and is built around an Android-first, Samsung-friendly ecosystem.
This guide breaks down price, compatibility, and health tracking so you can match the right ring to your phone and your priorities. For a wider look at the field, see our pick for the best smart ring overall.
Oura Ring 4 vs Samsung Galaxy Ring at a glance
| Feature | Oura Ring 4 | Samsung Galaxy Ring |
|---|---|---|
| Price | About $349 | About $399 |
| Subscription | Required, $5.99/month or $69.99/year | None |
| Battery | 5 to 8 days | 6 to 7 days |
| Compatibility | iOS and Android | Android only |
| Standout feature | Sleep and HRV close to a lab reference | No subscription, coordinates with Galaxy Watch |
Price and subscription
On the sticker, the Oura Ring 4 is the cheaper of the two at about $349, compared to about $399 for the Samsung Galaxy Ring. The catch is that Oura requires a subscription to unlock its full feature set. That membership costs $5.99 per month or $69.99 per year, and without it the app locks you out of detailed insights and leaves you with only basic scores.
The Galaxy Ring has no subscription at all. Once you buy it, every feature is included for the life of the device. That changes the long-term math. The Galaxy Ring costs more up front, but a year of Oura membership adds roughly $70 to the Oura total, and that fee repeats every year you own the ring. Over two or three years, the subscription-free Samsung can end up cheaper despite the higher starting price. If you want to weigh other options that avoid recurring fees, see our roundup of subscription-free smart rings.
Compatibility is the deciding factor
For many buyers, compatibility settles the choice before anything else. The Oura Ring 4 works with both iOS and Android, so it fits any phone you carry. The Samsung Galaxy Ring is Android only, and some of its features lean on Samsung phones specifically, with snore detection being one example that depends on a Samsung handset.
The practical takeaway is simple. If you use an iPhone, the Galaxy Ring is not an option, so Oura is your pick. If you carry an Android phone, both rings are open to you, and a Samsung phone makes the Galaxy Ring a more complete package.
Health tracking
Oura has built its reputation on measurement quality. The Ring 4 uses what the company calls Smart Sensing, a mix of red, green, and near-infrared LEDs, and its HRV and sleep efficiency readings come close to a polysomnography reference, the kind of measurement used in a sleep lab. A temperature sensor adds cycle insights, which makes it a strong choice for anyone tracking menstrual patterns. The titanium ring is light, ranging from 3.3 to 5.2 grams depending on size.
The Samsung Galaxy Ring covers the core metrics most people want. It tracks SpO2, motion, and heart rate, and it adds snore detection when paired with a Samsung phone. Its standout trick is coordination with the Galaxy Watch: the two devices can share sensors and work together to extend battery life. If you already wear a Galaxy Watch, the ring becomes part of a connected system rather than a standalone tracker. The concave titanium design fits comfortably alongside a watch.
Which should you buy?
Choose the Oura Ring 4 if you use an iPhone, if you want the most accurate sleep and recovery data available in a ring, or if temperature-based cycle tracking matters to you. Just budget for the ongoing membership fee.
Choose the Samsung Galaxy Ring if you are on Android, especially with a Samsung phone, if you want to avoid subscriptions entirely, or if you already own a Galaxy Watch and want the two to work together. It covers the essentials well without locking features behind a paywall.
Frequently asked questions
Does the Samsung Galaxy Ring work with an iPhone?
No. The Galaxy Ring is Android only, and some features require a Samsung phone. If you use an iPhone, the Oura Ring 4 is the better fit because it supports both iOS and Android.
Do I have to pay a subscription for the Oura Ring 4?
Yes. Oura requires a membership at $5.99 per month or $69.99 per year to unlock its full insights. Without it, the app shows only basic scores. The Galaxy Ring has no subscription.
Are both rings available to buy in the US?
Yes. Both Oura and Samsung were unaffected by the 2025 US ITC import ban that hit some rival ring brands, so both remain freely available in the US.
Verdict
The Oura Ring 4 is the better all-around tracker, with lab-close accuracy and broad phone support, as long as you accept the subscription. The Samsung Galaxy Ring is the smarter pick for Android and Samsung users who want a one-time purchase with no recurring fees and tight integration with the Galaxy Watch. Match the ring to your phone first, then weigh accuracy against the cost of ownership.
Last updated: June 2026. Prices and specifications change over time, so check the retailer for current details. Recentic is editorially independent and not affiliated with the brands mentioned. Wearables are not medical devices and cannot diagnose, treat or prevent any condition; consult a healthcare professional for medical concerns.