{"slug": "lawsuit-alleges-oura-ring-doesnt-accurately-track-sleep", "title": "Lawsuit alleges Oura ring doesnt accurately track sleep", "summary": "A class-action lawsuit filed Aug. 20 in the Northern District of California alleges Oura Ring, a fitness tracker made by Oura Inc., does not accurately track sleep because it cannot measure brain electrical activity, eye movements, or muscle tone, and instead relies on AI models that the suit calls 'guesswork.' The complaint, filed by Clarkson Law Firm on behalf of named plaintiff Madison Surber, who bought an Oura Ring 4 Gold for $513.68 in May 2025, seeks more than $5 million in compensation for over 100 class members, alleging fraudulent advertising and violations of California consumer laws.", "body_md": "# Lawsuit alleges Oura ring doesn't accurately track sleep\n\n[Anna Iovine](/author/anna-iovine)\n\n[Bluesky](https://bsky.app/profile/annaroseiovine.bsky.social).\n\n[Read Full Bio](/author/anna-iovine)\n\nA class-action lawsuit filed in the Northern District of California alleges that the fitness tracker [Oura Ring](https://mashable.com/tech/oura-ring-5-review) doesn't actually track one's sleep.\n\nThe [complaint](https://clarksonlawfirm.com/wp-content/uploads/2026/08/COMPLAINT-26-cv-08686-Surber-v.-Oura-Inc.-et-al.pdf), filed on Aug. 20, states that Oura can't measure brain electrical activity, eye movements, muscle tone, \"and other signals measured through electrodes placed on the scalp, leads on the eyes, and sensors on the chin,\" and because it doesn't do this, it can't track sleep or sleep cycles.\n\n\"Instead, Oura's AI models are doing guesswork as to what may be happening,\" it reads, \"based on improper inputs, and thus taking advantage of desperate consumers who struggle with their sleep or are concerned for their health by selling faulty AI-based inference as reliable science.\"\n\n[Terms of Use](https://www.ziffdavis.com/terms-of-use)and\n\n[Privacy Policy](https://www.ziffdavis.com/ztg-privacy-policy).\n\n**You May Also Like**\n\nWhile Oura states in technical materials that it doesn't track brain activity or eye movements, the lawsuit alleges that the company still claims to measure sleep stages and cycles. Clarkson Law Firm and named plaintiff Madison Surber filed the complaint. It states that around May 22, 2025, Surber bought an Oura Ring 4 Gold for $513.68 directly from Oura, and believed the ring could provide accurate data about her sleep.\n\nThe suit alleges Oura engaged in fraudulent advertising, unjust enrichment, breach of express and implied warranties, and violations of California's Unfair Competition Law, False Advertising Law, and Consumers' Legal Remedies Act. Over 100 class members seek monetary compensation totaling more than $5 million.\n\nMashable has reached out to Oura for comment.\n\nTopics\n[Fitness Trackers](https://mashable.com/category/fitness-trackers)\n[Fitness Tech](https://mashable.com/category/fitness-tech)\n\nAnna Iovine is the associate editor of features at Mashable. Previously, as the sex and relationships reporter, she covered topics ranging from dating apps to pelvic pain. Before Mashable, Anna was a social editor at VICE and freelanced for publications such as Slate and the Columbia Journalism Review. Follow her on [Bluesky](https://bsky.app/profile/annaroseiovine.bsky.social).", "url": "https://wpnews.pro/news/lawsuit-alleges-oura-ring-doesnt-accurately-track-sleep", "canonical_source": "https://mashable.com/tech/oura-ring-lawsuit-alleges-it-doesnt-accurately-track-sleep", "published_at": "2026-08-23 14:18:05+00:00", "updated_at": "2026-08-23 14:44:57.133860+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-ethics"], "entities": ["Oura Ring", "Oura Inc.", "Clarkson Law Firm", "Madison Surber", "Mashable", "Anna Iovine"], "alternates": {"html": "https://wpnews.pro/news/lawsuit-alleges-oura-ring-doesnt-accurately-track-sleep", "markdown": "https://wpnews.pro/news/lawsuit-alleges-oura-ring-doesnt-accurately-track-sleep.md", "text": "https://wpnews.pro/news/lawsuit-alleges-oura-ring-doesnt-accurately-track-sleep.txt", "jsonld": "https://wpnews.pro/news/lawsuit-alleges-oura-ring-doesnt-accurately-track-sleep.jsonld"}}