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Oura smart ring maker faces lawsuit over inaccurate sleep tracking
Oura's rings rely on heart rate and movement data to measure sleep quality

Oura smart ring maker faces lawsuit over inaccurate sleep tracking

Aug 22, 2026
12:29 pm

What's the story

Oura, the company behind the popular smart ring, is facing a proposed class-action lawsuit in California. The lawsuit alleges that Oura's rings do not track sleep as accurately as advertised. Instead of using reliable clinical measures like brain activity, they rely on heart rate and movement data to measure sleep quality and stages.

User concerns

Users have been raising concerns for years

The lawsuit comes after years of Oura users voicing their concerns about the smart ring's sleep accuracy.

Some users have reported feeling like they slept poorly but were told their sleep was optimal by the device.

Others have raised questions over its ability to monitor and detect sleep cycles accurately.

Accuracy dispute

Lawsuit takes issue with '95% sleep-staging accuracy' claim

The lawsuit takes issue with Oura's claim of "95% sleep-staging accuracy" for its latest ring. It argues that this claim is misleading as it doesn't use gold-standard clinical data.

The plaintiffs also highlight flashy ads and celebrity endorsements promoting the device's accuracy, while important disclaimers are hidden in technical documents.

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Legal action

Plaintiffs seek changes in marketing practices

The plaintiffs are not just seeking compensation for their grievances but also want Oura to stop these marketing practices.

They want changes to ensure future buyers aren't misled by the company's advertising strategies.

The lawsuit was filed by Clarkson Law Firm in San Francisco, but Oura has yet to respond to these allegations.

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