Smart Rings Atlas

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DecisionOura Ring 5Oura Ring 4
Statuscurrentcurrent
Reference price$399.00$349.00
Three-year hardware + required plan$614.64$564.64
Subscription$5.99 / month$5.99 / month
Phone supportios + androidios + android
Sizes6, 7, 8, 9, 10, 11, 12, 134, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
WeightFrom 2 g3.3–5.2 g
Sensors and insightsRed, green and infrared LEDs, Two photodetectors, Temperature sensor, Accelerometer. Outputs: Sleep and stages, Readiness and activity, Heart-rate and HRV trends, Temperature trends, Cycle insightsRed, green and infrared LEDs, Photodetectors, Temperature sensor, Accelerometer. Outputs: Sleep, Readiness, Activity, Stress trends, Cycle insights
Battery claim6–9 days5–8 days
ChargingSize-specific charger; about 80 minutes. Optional charging case sold separately.Size-specific charger; typically 20–80 minutes.
Water resistanceIP68; manufacturer states waterproof to 100 m.Manufacturer states 100 m; not for diving.
GPSNo 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. Supported routes, distance and pace use the phone’s location services; the phone must be carried.
PlatformsApple Health, Health Connect, Strava, 100+ integrations claimedApple Health, Health Connect, Strava
Market availabilityUS (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 noteGood brand-level evidence for sleep trends; Gen3 validation does not automatically validate every Ring 5 feature.Oura has the deepest published evidence base, but results remain generation- and population-specific.
Key strengthsMature interpretation; Broad integrations; Published Oura sleep researchWide size range; Mature app; Five-to-eight-day claim
Key limitationsMembership cost; Narrower size range than Ring 4; Ring 5 claims need generation-specific validationMembership cost; Older and larger than Ring 5; Finish stock varies

Three-year figures include the reviewed hardware reference and only a required base plan. They exclude tax, shipping, optional services and future changes.

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