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Oura Ring 4 review: still on top — for now

But that subscription is still the biggest con.

The Today tab contains shortcuts to specific metrics, a timeline of all your daily activity, and cards that highlight different things (e.g., sleep score, readiness, etc) depending on the time of day. For tracking, Oura cites an external study saying the new Smart Sensing algorithm supports a significant bump in accuracy for signal quality, blood oxygen, and breathing disturbance detection. The app is polished, I never have to think twice about syncing, the company puts immense effort into continually improving accuracy, and it’s had frequent feature updates in the past year.

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