We compared the top fitness smart rings side-by-side — price, battery life, health tracking features, and subscription costs. Here is what we found.
Smart rings crossed from niche gadget to mainstream fitness tool in 2026. Six major brands now sell rings serious enough to replace or complement a fitness tracker. The price range runs from $259 to $399 — before you factor in subscription fees that can add $72 per year or more.
This guide cuts through the marketing. Below you will find a side-by-side comparison table, detailed breakdowns of the top six rings, and a straightforward "which ring is right for you" picker.
| Ring | Price | Subscription | Battery | Sleep tracking | HRV | SpO2 | Auto workout | Water rating | Best for |
|---|---|---|---|---|---|---|---|---|---|
| Oura Ring 4 EDITOR'S PICK | $349 | $5.99/mo | 7 days | ✓ Best in class | ✓ | ✓ | ✓ 40+ types | 100m | All-round health |
| Samsung Galaxy Ring | $399 | None | 7 days | ✓ Excellent | ✓ | ✓ | ✓ | 100m | Android users |
| Ultrahuman Ring Air | $349 | None | 9 days | ✓ Very good | ✓ | ✓ | ✓ 30+ types | 100m | No subscription |
| RingConn Gen 2 | $279 | None | 9 days | ✓ Good | ✓ | ✓ | Limited | 100m | Budget pick |
| Evie Ring by Movano | $269 | None | 6 days | ✓ Good | ✓ | ✓ | Limited | 100m | Women's health |
| Circular Ring Slim | $259 | None | 8 days | ✓ Good | ✓ | ✓ | Basic | 50m | EU-made option |
Prices in USD at time of research (July 2026). EU prices may vary due to VAT and local distribution. Always check the brand's official site for current pricing.
The Oura Ring 4 is the benchmark that every other ring is measured against. Its sleep tracking is the most detailed available in a ring form factor — Oura breaks sleep into stages, gives you a sleep score, and pulls HRV data throughout the night to generate a daily Readiness Score that tells you how hard to push in training.
The fourth generation added improved blood oxygen tracking, a redesigned titanium shell that is thinner than its predecessor, and smarter automatic workout detection across 40+ activity types. It works with both iOS and Android.
The catch is the subscription. Without the $5.99/month Oura Membership, you only get raw data — no insights, no readiness score, no cycle tracking. The ring is functionally hobbled without it. That is a real objection for buyers who compare it to subscription-free alternatives.
The Samsung Galaxy Ring launched in 2024 and quickly established itself as the strongest subscription-free alternative to Oura. The hardware matches the Oura Ring 4 in most respects: titanium build, 7-day battery, 100m water resistance, continuous heart rate and SpO2 monitoring.
Where it pulls ahead is ecosystem integration. If you use a Samsung Galaxy phone, the ring feeds directly into Samsung Health's AI coaching layer, which can coordinate data with a Galaxy Watch for a more complete fitness picture. The Energy Score — Samsung's version of Oura's Readiness Score — is available with no subscription.
The main limitation: Samsung Health integration is significantly weaker on iOS. If you use an iPhone, the Oura Ring or Ultrahuman Ring Air will give you a much better experience.
The Ultrahuman Ring Air matches the Oura Ring 4's price while eliminating the subscription entirely. Its 9-day battery life is the longest of any premium ring in 2026. The app focuses on sports performance — it has a Movement Index that scores how much you have moved vs sat still during the day, and an in-app sleep coaching layer that identifies patterns without requiring a paid tier.
Ultrahuman's workout detection covers 30+ sport types including outdoor cycling, swimming, and strength training. It also connects to glucose monitors for users interested in metabolic health — a feature unique to this brand.
The app is less polished than Oura's and the sleep staging, while good, is not quite at Oura's level of detail. But for the money — no subscription, 9-day battery, solid fitness tracking — it is excellent value.
RingConn is a Chinese brand that has quietly built one of the better value propositions in smart rings. The Gen 2 tracks heart rate continuously, measures HRV and SpO2, and delivers sleep staging with a nightly sleep score. Battery life matches or exceeds Ultrahuman at up to 9 days.
The gap compared to premium rings shows up in automatic workout detection — RingConn is better at flagging that you were active than at identifying which sport you did. The app also receives fewer updates than Oura or Samsung Health. But for a buyer who wants the sleep and recovery basics without subscription costs, it delivers.
| If you want... | Choose | Why |
|---|---|---|
| The best health tracking possible, cost is secondary | Oura Ring 4 | Deepest sleep analysis, readiness scoring, largest ecosystem |
| Great fitness tracking, no monthly fees, Android phone | Samsung Galaxy Ring | Full features with no subscription inside Samsung Health |
| Best all-round without a subscription, any phone | Ultrahuman Ring Air | 9-day battery, no subscription, strong fitness tracking, iOS + Android |
| Smallest budget, still want sleep and HRV tracking | RingConn Gen 2 | $279, no subscription, solid basics |
| Women's health features (cycle tracking) + no subscription | Evie Ring by Movano | Designed specifically for women's biometrics |
| EU-made device, strong privacy stance | Circular Ring Slim | European brand, GDPR-compliant by design |
Subscription cost over 3 years. A $349 ring with $5.99/month costs you $564 over 3 years. A $399 ring with no subscription costs $399. The subscription changes which ring is actually cheapest in the long run.
Ring sizing. Unlike a smartwatch with a universal strap, smart rings come in fixed sizes (usually 5–13). Most brands ship a free sizing kit. Order the sizing kit first — do not guess your size. Returning a ring is often more complicated than returning a watch.
iOS vs Android compatibility. All rings listed here work with both platforms, but Samsung Galaxy Ring is significantly better on Android/Samsung. If you are on iOS and want the best experience, choose Oura, Ultrahuman, or RingConn.
What EU regulation covers. Smart rings are consumer wellness devices, not medical devices, in most EU jurisdictions. They are not FDA or CE cleared for clinical diagnostics. Use them to track trends, not to make medical decisions.
The Oura Ring 4 remains the gold standard for comprehensive fitness and health tracking. If you want to avoid a subscription, the Samsung Galaxy Ring and Ultrahuman Ring Air are the strongest alternatives.
It depends on the brand. Oura Ring requires a $5.99/month subscription for insights. Samsung Galaxy Ring, Ultrahuman Ring Air, RingConn, and Evie Ring have no subscription — all features included at purchase.
For resting heart rate and overnight HRV, accuracy is high and comparable to wrist-based trackers. For real-time exercise heart rate, smart rings are less accurate than chest straps. Do not use them for clinical decisions.
Yes — all five rings above are rated to at least 50m water resistance. The Oura Ring 4, Samsung Galaxy Ring, Ultrahuman Ring Air, and RingConn Gen 2 are all rated to 100m. Swimming is fine. Prolonged sauna use is not recommended for any ring.