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Comparison · updated 2026-10-08
Oura’s phone flexibility and size 4 against a subscription-free Galaxy routine.
Ring 4 is the choice for iPhone users or size 4; Galaxy Ring is the fee-free option for a compatible Samsung phone.
Ring 4 supports both phone platforms and includes size 4. That can decide the comparison before features matter. Oura’s app is the attraction for buyers willing to fund membership; the wider size range is not a promise that every finish is stocked locally.
Galaxy Ring fits someone who wants passive tracking inside Samsung Health without a required core plan. Its portable charging case may also suit travel. Confirm the exact Galaxy handset and feature eligibility first, especially if your current phone or next purchase is not a Samsung.
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| Decision | Oura Ring 4 | Galaxy Ring |
|---|---|---|
| Status | current | current |
| Reference price | $349.00 | $399.99 |
| Three-year hardware + required plan | $564.64 | $399.99 |
| Subscription | $5.99 / month | No mandatory plan |
| Phone support | ios + android | android |
| Sizes | 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 |
| Weight | 3.3–5.2 g | 2.3–3.3 g |
| Sensors and insights | Red, green and infrared LEDs, Photodetectors, Temperature sensor, Accelerometer. Outputs: Sleep, Readiness, Activity, Stress trends, Cycle insights | Optical bio-signal sensor, Temperature sensor, Accelerometer. Outputs: Sleep, Energy Score, Heart rate, Activity, Cycle Tracking |
| Battery claim | 5–8 days | 6–7 days |
| Charging | Size-specific charger; typically 20–80 minutes. | Portable case; about 90 minutes. |
| Water resistance | Manufacturer states 100 m; not for diving. | 10 ATM and IP68 under specified test conditions. |
| GPS | No built-in GPS is stated. Supported routes, distance and pace use the phone’s location services; the phone must be carried. | No built-in GPS is stated. Workout routes use the connected phone’s GPS and require phone location services. |
| Platforms | Apple Health, Health Connect, Strava | Samsung Health, Health Connect |
| Market availability | US (available), CA (available), GB (available), IE (available), BE (available), NL (available), DE (available), FR (available), IT (available), ES (available), PL (available), SE (available), JP (available) | US (available), CA (available), GB (available), IE (available), BE (available), NL (available), DE (available), FR (available), IT (available), ES (available), PL (available), SE (available), JP (available) |
| Evidence note | Oura has the deepest published evidence base, but results remain generation- and population-specific. | US FDA clearance covers a moderate-to-severe sleep-apnea risk workflow that may use Galaxy Ring data, but does not establish current access on every device or market and does not diagnose or exclude sleep apnea. Ring-specific independent accuracy evidence remains limited. |
| Key strengths | Wide size range; Mature app; Five-to-eight-day claim | Deep Galaxy integration; No ring subscription; Portable case |
| Key limitations | Membership cost; Older and larger than Ring 5; Finish stock varies | No iPhone support; Compatible Galaxy required; Confirm sleep-apnea feature rollout and device eligibility |
Reference costs use dated hardware prices and full required monthly payments; introductory months, annual discounts, taxes, shipping and optional services are excluded. Battery figures are manufacturer claims, not our tests.
The lower Oura hardware reference does not automatically mean lower ownership cost once membership is included. Conversely, a Galaxy promotion cannot solve an unsupported phone or poor fit. If you have used Oura for years, factor in whether its history and interpretation are useful enough to justify the recurring charge rather than switching on price alone.
Confirm market, phone, size and required plan first. A product that fails one is not a match.
Battery and feature claims come from different test conditions. Read each product page’s dated sources and evidence note.
Source-based comparison, not a hands-on review.
Price, dimensions, battery and water resistance.
Price, ecosystem and water caveats.
US and EU prices, included month, cancellation, account transfer and access without membership.
Wellness only. None of these rings diagnoses a condition or replaces professional care.