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Tom’s Guide
Tom’s Guide
Technology
Dan Bracaglia

I wore the Circular Ring 2 for three weeks and wanted to love it — but one big thing held it back

Circular Dan Bracaglia Amazfit Tom Guide FDA Oura Samsung
Close-up of the Circular Ring 2 .

While brands like Oura and Samsung dominate the best smart ring space in 2025, smaller startups, including Circular, RingConn, and Amazfit, offer appealing alternatives that don’t require a subscription (unlike Oura) and play nicely with both Android and iOS devices (unlike Samsung).

Having already reviewed the Amazfit Helio Ring and the latest RingConn Gen 2 Air, I was curious to see how Circular's newest release compares. Having first checked out the Circular Ring 2 at CES 2025 in January, I finally got a review unit on my finger in September.

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