Oura Ring Gen3 vs Samsung Galaxy Ring

Oura stopped selling Gen3 but kept updating it, most recently with firmware 3.4.3 on 20 April 2026. A Gen3 that still charges is a working ring, so the real question is whether your phone and your budget let you move to Samsung’s.

Gen3 and Galaxy Ring side by side

Spec	Oura Ring Gen3	Samsung Galaxy Ring
On sale	No; ring and charger discontinued	$399.99 on 19 September 2026; out of stock by that evening
Fees	Oura Membership: $5.99 a month or $69.99 a year (US), first month free	None listed
Phone	iOS 16+ or Android 11+ with Google Play; Bluetooth 5.0	Samsung Galaxy phone with a Samsung account; no iPhone
Battery	Up to 7 days	6 or 7 days, depending on size
Charging	20–80 minutes; charger discontinued	About 80 or 90 minutes in the included case
Data kept on the ring	Up to 7 days	Not published
Sizes	Not published for Gen3	5–15
Width and thickness	Not published	7 mm wide, 2.6 mm thick
Weight	Not published	2.3–3.2 g
Water	100 m (Oura’s guidance for its rings)	10 ATM and IP68
Sensors	Green, red and infrared LEDs; extra NTC temperature sensor; infrared alignment sensor; accelerometers	Optical heart-rate sensor, skin temperature sensor, accelerometer
Shapes and finishes	Horizon and Heritage; six finishes	One shape; Black, Silver, Gold

Your phone decides it

Galaxy Ring only works with a Samsung Galaxy smartphone signed in to a Samsung account. If your Gen3 lives on an iPhone, Galaxy Ring is out. Gen3 is far less fussy: iOS 16 or later, or Android 11 or later with Google Play, on any phone with Bluetooth 5.0.

On a Galaxy phone, Samsung’s ring also takes a gesture: on One UI 6.1.1 or higher, a double pinch can dismiss an alarm or take a photo, though a Galaxy Watch with its own gestures switched on overrides it.

Membership or Samsung Health

Gen3 runs on Oura Membership, $5.99 a month or $69.99 a year in the US and tied to your account. The membership is where the detail lives: sleep analysis, 24-hour heart rate, blood oxygen and automatic activity detection. Let it lapse and Gen3 falls back to its three daily scores and the basic app screens. If your account still carries an old Lifetime Membership promo, that alone is a reason to stay put.

Samsung’s US pages list no membership fee for Galaxy Ring. Your Energy Score, built from sleep, activity and heart rate, sits in Samsung Health and is stored in Samsung Cloud. Read Samsung Health’s terms before you count on every feature staying free.

On fees alone, switching takes a long time to pay off: Galaxy Ring’s $399.99 works out to nearly six years of Oura’s annual plan.

Battery and charging

Oura rates Gen3 for up to seven days on a full charge, depending on size, settings, activity and battery age, and the ring holds up to a week of data between syncs. Oura’s charging window for its rings is 20 to 80 minutes; on Gen3 you line the sensor bumps up opposite the charger’s light. Oura’s safety guide gives a battery range for its rings in general, not Gen3 alone: 15 to 22 milliamp-hours, from US size 6 to 13.

The charger is Gen3’s weak point. Oura no longer sells it, and it offers no travel case for this ring.

Samsung isn’t consistent about Galaxy Ring’s battery. Its “Introducing the Samsung Galaxy Ring” article promises up to 7 days, with about 80 minutes to charge. “How to charge the Galaxy Ring” gives 6 days to sizes 5 to 11 and 7 to sizes 12 to 15, with about 90 minutes to charge. The Galaxy Ring page reserves 7 days for sizes 12 and 13, with 6 for everything smaller. Plan on six days, or seven in sizes 12 and up.

The case comes in the box. Samsung says a full case holds enough for up to 1.6 recharges, and its marketing counts up to 14 days between wall charges with the case’s help.

Sensors and sleep

Gen3 is the Oura generation that added daytime and activity heart rate. It reads through green, red and infrared LEDs and adds an extra NTC temperature sensor, an extra infrared alignment sensor and accelerometers.

Galaxy Ring senses with an accelerometer, an optical heart-rate sensor and a skin temperature sensor. Its sleep analysis draws on heart rate, blood oxygen and skin temperature, snore detection is listed in the US, and the ring can start tracking walks and runs on its own.

Neither ring is a medical device. Oura says Gen3 isn’t meant to diagnose, treat, cure, monitor or prevent any condition, and Samsung warns that Galaxy Ring’s cycle tracking is no form of contraception and isn’t for under-18s.

Fit and water

Galaxy Ring is 7 millimeters wide and 2.6 thick, weighs 2.3 to 3.2 grams, and comes in sizes 5 to 15 in Black, Silver or Gold titanium. Gen3 is titanium too, with a PVD or DLC coating depending on the finish and a non-metallic, BPA-free inner surface. Oura never gave Gen3’s width, thickness or weight, and Ring 4’s figures are no guide to it.

Galaxy Ring carries 10 ATM and IP68 ratings: up to 100 meters for 10 minutes, or 6 feet for 30 minutes, and Samsung advises rinsing it after salt water or chlorine. Oura’s guidance for its current rings is 100 meters, fine for swimming and recreational diving or snorkeling but not scuba, and no more than 12 hours underwater at a time. Oura hasn’t restated that rating for Gen3 on its own.

What switching costs

Samsung listed Galaxy Ring at $399.99 on the morning of 19 September 2026, with Silver available; by evening every finish showed out of stock. Samsung’s $150 instant trade-in credit is a promotion, separate from the $399.99 price. Check samsung.com for stock in your size before you buy.

There’s no new Gen3 to price. If yours still charges and pairs, keeping it costs only the membership.