Don't make this smart ring mistake, here's two I recommend instead

"Circular markets its Circular Ring 2 as a health companion with the typical suite of health tracking metrics: ECG and atrial fibrillation detection, blood pressure and glucose tracking, and a unique-to-Circular smart alarm that detects the lightest sleep stage to wake users up in. It's also subscription-free, which rivals its biggest biggest competitor, Oura, which gatekeeps the bulk of user data behind a $70 a year subscription."

"If its software weren't so laggy, perhaps I would have been able to try out these features in the first place. I spent 14 days having the ring get accustomed to my sleep, activity, and overall lifestyle. During this period, Circular doesn't offer up any analytics; saying that it's still getting to know me."

"This is far too long, especially compared to other smart rings that dive into analytics on day one. If metrics aren't 100% accurate off the bat, other smart rings adjust scores and data according to user's baseline as it's worn further. Most people aren't patient enough to wear and charge a ring for 14 days with no feedback."

Circular Ring 2 advertises ECG and atrial fibrillation detection, blood pressure and glucose tracking, and a smart alarm that aims to wake users during the lightest sleep stage. The product is subscription-free. The ring requires a 14-day calibration period before offering analytics, during which no data or scores are presented. Software performance is laggy, delaying usable feedback and frustrating users. Once data begins syncing, metrics can vary considerably when compared with established competitors such as the Oura Ring 4. The lengthy onboarding and inconsistent metrics reduce practical usefulness for most users seeking immediate, reliable health insights.

Read at ZDNET