5 things to know about the Cudis Sporty Ring — a color-changing Oura Ring 4 competitor

Close-up of the Cudis Sporty smart ring with swappable colored exterior — (Image credit: Dan Bracaglia/Tom's Guide)

The ever-expanding smart ring market is about to get a little more competitive and a lot more stylish. The Cudis Sporty Ring — weird name, I know — promises heady AI-backed wellness insights, on par with the top-performing smart ring of 2026, the Oura Ring 4, along with the best Oura Ring 4 alternatives.

5 ways the color-changing Cudis Sporty Ring beats the Oura Ring 4

The Cudis Sporty is also the only smart ring I’m aware of with a color-changing exterior. No, it’s not based on your mood, but rather, personal preference. That’s just one of the advantages the new Cudis Sporty Ring seemingly has over the Oura Ring 4. Find out how it pulls off this chameleon-like wizardry, and four other ways it potentially beats the king of smart rings, below.

1. Subscription-free tracking

Fully funded on Kickstarter with 40 days to go as of writing, the Cudis Sporty Ring is expected to ship this summer for $399. That said, you can secure much cheaper pricing, $239, by backing the project before the campaign ends.

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While the eventual starting price of the ring is $50 more than that of the Oura Ring 4, unlike the industry leader, the Cudis Sporty Ring is subscription-free (Oura charges $5.99 a month for access to insights).

2. Interchangeable exterior

Close-up of the Cudis Sporty smart ring in 12 different colors — (Image credit: Cudis)

Buying a smart ring used to mean committing to one single finish or style. Not with the Cudis Sporty. While the body of the ring is made from titanium and epoxy, a swappable textured silicone band adorns the outside.

My review ring shipped with a standard black band, along with two ‘Focus Green’ color options. In total, Cudis offers 12 Pantone-coded colors to choose from. Not only does the silicone protect the smart ring from bumps and abrasions, but swapping one band for another is a painless affair.

3. Good behavior earns redeemable ‘Health Points’

‘Health Points,’ rewarded for good behavior like getting a solid night of rest or achieving your weekly workout goals, are a key motivational feature of the Cudis Sporty Ring. Similar to Apple’s Workout Rings, Health Points are designed to encourage healthy habit-forming.

Banking loads of health points doesn’t just provide bragging rights, though. Cudis says users will be able to redeem their points for actual goods and services, such as premium app features, free fitness classes, supplements, and workout gear. A yet-to-launch Cudis Store will be available to ring owners in the U.S., Korea, Japan, Singapore, and Malaysia.

4. ‘Pace of Aging’ metric

While the Oura Ring 4 offers insights into your cardiovascular age, the Cudis Sporty Ring promises an even headier aging metric, called “Pace of Aging” (PoA), that takes into account more than just heart health, but all of your holistic and fitness data.

By keeping a user’s PoA front and center, Cudis hopes to make users keenly aware of which types of lifestyle decisions reverse the aging process versus speed it up. The metric is accompanied by AI-backed guidance and insights, which, according to Cudis, are both ‘stark and honest’ in nature.

Transition: There will be no sugarcoating your holistic shortcomings or failures. Who doesn't love being scolded by an inanimate object?

5. Ten-day battery rating

Last but not least, the Cudis Sporty Ring promises better battery performance than the Oura Ring 4. The former is rated for ten days of use per charge, while the latter is rated for eight days (closer to six days in real-world testing).

It’s worth noting that the Cudis Sporty is quite a bit thicker than the Oura Ring 4, roughly 4mm compared to 2.9mm, which means space for a potentially larger-capacity battery.

Ultimately, the Cudis Sporty Ring promises a whole lot when it comes to sleep, fitness, recovery, and aging insights, not to mention the color-changing capabilities. However, until the companion app reaches its final release-ready form, I’ll hold off on my final judgments. For now, color me intrigued.

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Dan Bracaglia is the Tom’s Guide editorial lead for all things smartwatches, fitness trackers and outdoor gear. With 15 years of experience as a consumer technology journalist testing everything from Oura Rings to instant cameras, Dan is deeply passionate about helping readers save money and make informed purchasing decisions. In the past year alone, Dan has assessed major product releases from the likes of Apple, Garmin, Google, Samsung, Polar and many others.

An avid outdoor adventurer, Dan is based in the U.S. Pacific Northwest where he takes advantage of the beautiful surroundings every chance he gets. A lover of kayaking, hiking, swimming, biking, snowboarding and exploring, he also makes every effort to combine his day job with his passions. When not assessing the sleep tracking and heart rate accuracy of the latest tach gadgets, you can find him photographing Seattle’s vibrant underground music community.

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Watch out, Oura — 5 ways this new color-changing smart ring beats the competition