I found a subscription-free smart ring that rivals Oura - and it did some things better
Briefly

The Ultrahuman Ring Air stands out in the smart ring market for its subscription-free model, advanced health data features, and sleek design. Tested alongside the Oura Ring, this ring provides insights that cater to hardcore fitness enthusiasts and casual users alike. It is the thinnest and most discreet option available, boasting a matte finish that is durable and scratch-resistant. Notifications about body metrics, such as residual adenosine levels, empower users to optimize their health throughout the day, enhancing their overall wellness experience.
"Unlike the Oura Ring, which requires a $6 monthly subscription, the Ultrahuman Ring Air is subscription-free, making it a more appealing option for cost-conscious users."
"Ultrahuman is sending you notifications on how to make the most of your available energy and body clock, providing insights that feel like hacking your health."
Read at ZDNET
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