Madison Surber files class action lawsuit against Oura alleging misleading sleep tracking accuracy
Madison Surber filed a proposed class action lawsuit against Oura in the Northern District of California, alleging the company misleads users regarding the accuracy of its sleep tracking. The lawsuit claims that Oura's marketing of 95% sleep staging accuracy is deceptive because sleep occurs in the brain rather than on a finger.
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The complaint alleges that the user's sleep stages are estimated through AI models and guesswork rather than direct measurement, comparing the ring's performance to a coin flip. Oura responded to the lawsuit by stating it is baseless. The company clarified that its 95% accuracy claim refers to sleep-vs-wake detection, while the four-stage accuracy (wake, light, deep, and REM) is closer to 76% in healthy adults. The lawsuit highlights a discrepancy between Oura's marketing and independent studies that show lower four-stage accuracy for patients with disordered sleep. While Oura classifies the ring as a wellness product rather than a medical device, the lawsuit suggests the company may be overstepping by claiming clinical-grade accuracy. The case remains open as the court determines if the marketing labels match the scientific evidence provided by the sensors.
Sources
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Is my Oura Ring 100% accurate? No, and I wouldn't expect it to be — here's why I'll keep using it to track my sleep
Yahoo Tech
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How Oura's 95% Sleep Accuracy Claim Became a Class Action Lawsuit
Medical Device and Diagnostic industry