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Smart ring maker Oura has filed publicly with the SEC to go public, revealing revenue jumped from $697 million to $1.2 billion in the nine months ending June 30 compared to a year earlier. The company reports selling 3.6 million rings over the past year and now has roughly 5 million paid subscribers, with an 85% annual membership retention rate.
Smart-ring maker Oura revealed financial details as part of its move toward going public, showing it has become profitable. The company reported 74% revenue growth for the nine months ending in June compared with the prior year.
Circular debuted two new smart rings at IFA, the Ring 3 Pro and Ring 3 Slim, both featuring built-in NFC for contactless payments via supported Visa or Mastercard cards—a capability absent from Oura and Samsung's Galaxy Ring. The Pro adds FDA-cleared ECG, blood-pressure monitoring, and a bigger battery lasting up to 12 days, while the Slim is lighter and thinner but caps battery life at 10 days. Pricing and availability have not been disclosed.
Oura is extending its Menopause Impact Scale, a self-reported questionnaire it launched in May that measures how menopause symptoms affect quality of life, beyond its own app. Ten partners—including Alloy Health, Gennev, Wisp, Pomelo, Maven, Tia, Xella, Oova, Mira and Hertility—will now integrate the scoring tool into their care and tracking services. The scale evaluates 22 symptoms across seven categories such as sleep, cognition, body image and hot flashes, and results can be exported as a PDF to share with providers.
Whoop has removed the membership requirement for its Advanced Labs blood-testing screenings, letting non-subscribers access them for roughly $70 per test. However, the Whoop band itself remains functionally locked without an active subscription, requiring at least $149 a year for basic features like recovery insights, sleep tracking, and VO2 max data.
Bloomberg's Mark Gurman reports Apple is developing continuous heart-rate monitoring and a redesigned health app for the upcoming Apple Watch Series 12 and Ultra 4, aiming to compete with wellness-focused rivals like Whoop and Oura. Apple is also reportedly testing a ceramic model in two finishes, white and dark gray, along with additional band color options.
A class action lawsuit filed against Oura alleges the company misled consumers about how accurately its smart ring detects sleep stages, arguing it lacks sensors for brain waves, eye movement and other neurological signals needed to truly measure sleep. Plaintiff Madison Surber says she paid roughly $503 for the ring believing its tracking claims, and cites a Nature study suggesting the device's sleep-stage detection performs little better than random guessing.
A class action lawsuit filed against Oura claims the company misled consumers about the accuracy of its smart ring's sleep-stage tracking. The suit argues Oura lacks sensors for brain waves, eye movement, and muscle activity needed to properly detect sleep stages, and instead relies on AI guesswork from heart rate, temperature, and breathing data. The named plaintiff, who paid $503 for the ring, says she was overcharged for a device that doesn't deliver the accuracy Oura advertises.
A newly filed class-action lawsuit claims Oura Ring cannot accurately determine sleep stages because it relies on AI inference rather than direct brain-wave measurement, likening its accuracy to a coin flip. The complaint argues Oura is exploiting sleep-deprived consumers by marketing statistical estimates as reliable science. Verge writer Victoria Song notes that no wearable device measures brain activity directly, since all such gadgets rely on motion and physiological proxies interpreted through algorithms.
Smart ring maker Oura is said to be planning a U.S. IPO as soon as next month, aiming to raise up to $3 billion at a valuation exceeding $16 billion, according to Bloomberg. That figure would nearly double the $10.9 billion valuation the company received in its September Series E round, with existing investors expected to sell a significant portion of shares in the offering.