Do Oura Rings Work? Lawsuit Says Metrics From $500 Smart Ring Are Guesswork

Smart ring maker Oura was hit Thursday with a proposed class action lawsuit alleging it misled customers about how accurately its $500 ring tracks sleep. Clarkson Law Firm filed the suit on behalf of Madison Surber, a California woman who says she paid roughly $514 for an Oura Ring 4 in May 2025. The complaint ...