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Oura has introduced two new cardiovascular health features for its smart ring: Cardio Effort, which measures exertion during activity, and Automatic VO2 Max, which estimates aerobic fitness without requiring a dedicated test. The features add to the ring's existing suite of health and recovery metrics.
Oura announced two new fitness features for its smart ring: Cardio Effort, which rates weekly activity strain on a five-level scale compared to a user's baseline, and an automatically estimated VO2 Max metric. The VO2 Max feature, previously called Cardio Capacity, no longer requires a six-minute walking test and instead derives estimates passively from GPS-enabled workouts. VO2 Max will be available through Oura Labs for third-generation Oura Ring models and newer.
Oura has introduced automatic VO2 Max measurement for its smart rings, eliminating the need for users to perform manual walking tests to estimate this cardiovascular fitness metric. The feature calculates VO2 Max passively using data the ring already collects during normal wear.
Oura is rolling out two new cardiovascular features for its smart ring: Cardio Effort, which rates weekly exercise strain from Light to Reaching based on a personalized baseline, and automatic VO2 Max, a beta feature that estimates aerobic capacity without requiring a manual six-minute walking test. VO2 Max activates automatically after a user completes five qualifying GPS-tracked walks, runs, or hikes, with results shown in the app's Heart Hub alongside trend data and personalized insights.
Oura announced two new workout metrics rolling out to Ring Gen3 and later models: Cardio Effort, which measures how much a workout taxes the cardiovascular system relative to a user's baseline, and VO₂ max, which estimates how efficiently the heart, lungs and muscles use oxygen during exercise. Cardio Effort is broken into per-workout and weekly totals, with the weekly score categorized from 'Light' to 'Reaching' based on personalized heart-rate ranges.
A reviewer testing Hatch's contactless Sleep Clock compared its sleep duration and stage readings against an Apple Watch Series 12 and Oura Ring 5, finding duration estimates mostly aligned but sleep-stage data more variable. The device requires precise placement 2 to 4 feet from the sleeper with a clear line of sight, and it only tracks the person closest to it, unlike dual-sleeper systems such as Eight Sleep.
Amazon is selling the Oura Ring Gen 3 Horizon in Gold for $269.99, marking an $80 reduction from its usual price. The smart ring tracks sleep and other health metrics.
The Oura Ring 5 and Apple Watch Series 12 both track health metrics like sleep, activity, and heart rate, with the Series 12 offering additional functionalities such as a touchscreen, cellular connectivity, and on-device apps. The Series 12 is compatible only with iPhones running iOS 27 or later, while the Oura supports Android via Health Connect, making it more versatile for different users. The Series 12 also provides more accurate workout tracking and on-device controls, unlike the Oura, which relies on a phone for data access and management.
Smart ring maker Oura has postponed its US stock market listing, which would have valued the company at up to $15bn, citing uncertainty in the IPO market. The firm had filed documents just over a week earlier to raise as much as $2.2bn by selling shares priced between $40 and $44 on Nasdaq. CEO Tom Hale said the company can choose when to revisit going public.
Smart ring maker Oura has indefinitely delayed its planned initial public offering, which had been set to sell 55 million shares priced between $40 and $44, valuing the company near $15 billion. CEO Tom Hale said the delay reflects broader uncertainty in the IPO market, adding that the company can choose its timing. Oura reported 5.7 million paying members, up from 5 million in June, and expects 90% revenue growth in its 2026 fiscal year after posting $907.9 million in revenue.
Oura, maker of the smart ring, has delayed its planned Nasdaq stock listing just days after formally launching the IPO process. The company attributed the pause to uncertain market conditions.
Oura announced it is postponing its planned public listing, just a week after formally launching IPO plans on Sept. 21 that aimed to raise up to $2.2 billion via 50 million shares. CEO Tom Hale said the company is profitable, seeing strong demand and business growth, but is choosing to wait for a better moment rather than proceed now.