Best sleep trackers 2026: We tested the best from Whoop to Oura
We rounded up the best sleep trackers, now including the Whoop MG and Oura Ring 5.
A lawsuit has accused the Oura smart ring of inaccurate sleep tracking, claiming its accuracy is akin to flipping a coin. The plaintiff argues that Oura's smart ring lacks the necessary sensors, such as brain waves, eye movement, cardiac activity, muscle movement, and a finger PPG, to accurately measure neurological activity that defines sleep stages.
According to the complaint, Oura's AI models are essentially making guesses based on improper inputs, leading to faulty AI-based inference being sold as reliable science to desperate consumers concerned about their sleep or health. The lawsuit, filed by Madison Surber, highlights the importance of accurate sleep tracking, as it is the foundation of the billion-dollar health wearables industry.
The court's ruling could potentially impact the entire industry, as sleep tracking is a key feature marketed by wearable devices like smart rings and smartwatches.
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