Verdict
The Cudis 002 Sporty Ring brings new smart ring design and software ideas, and mostly succeeds with them.
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Colourful design
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Approachable AI Coach
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Nicely designed companion app
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Cudis Store rewards only available in some countries
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Heart rate data looked high at times
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Limited app integration currently
Key Features
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Vast colour options
Interchangeable textured silicone bands available in 12 colours to customise the ring’s look
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Strong water resistance
5ATM rating makes it suitable for showering and swimming without needing to remove it.
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Long-lasting battery
Up to 10 days of use on a single charge, with a full recharge taking under an hour.
Introduction
The Cudis 002 Sporty Ring is a smart ring that takes a different approach to what a smart ring should look like and how it should motivate you to stay on top of your health and fitness goals.
Joining the Classic Cudis 002, this Android and iOS-friendly ring can track data like sleep and heart rate. It also embraces AI to coach you to make better decisions about your day and night, includes a rewards system with physical rewards, and wraps that up in a playful and customisable design.
It’s another smart ring that comes minus a subscription, as the number of subscription-free alternatives to the Oura Ring continues to grow. Many of the rings have stuck to a similar formula. Cudis is playing around with that formula and could be onto something with the Sporty Ring.
Price and availability
After its crowdfunding campaign, the Cudis 002 Sporty Ring will retail for $399. That puts it up with some of the most expensive smart rings currently available.
The Oura Ring 4 starts at $349/£349, then there are the likes of the Ultrahuman Ring Pro ($419/£429) and the RingConn Gen 2 ($418.60/£299). There are cheaper rings out there. The Amazfit Helio Ring sits at $149/£149, and the newcomer Leep Ring sits at $199/£169.
It’s a subscription-free smart ring, so if you can stomach the cost of the hardware, the features in the Cudis app won’t cost you any more money.
Design
- Vast array of silicone band colours
- 5ATM water resistance rating means it’s shower and swim-proof
- Includes a portable charging case
The Cudis 002 Sporty Ring is a smart ring that cannot be accused of simply mimicking the look of other smart rings.
The core part of the ring is made from titanium, which is pretty much the go-to metal for most smart rings. On top of that lies a textured silicone band that wraps around the majority of the ring. That band can be picked up in a choice of 12 colours. That includes shades with names like focus green, zen lavender and power purple (pictured). You also don’t have to stick to just the one band colour, and it’s easy to pick it away from the ring body to swap in another colour.
It creates a fun-looking ring, and the added band helps protect the titanium ring’s body from the kind of scratches an uncovered ring typically picks up. While I liked that more colourful exterior, I couldn’t help feel like the silicone didn’t feel hugely high-grade.
Sizing ranges from 6 to 13, which should cover most finger sizes. I was able to opt for the same size as most other smart rings I’ve tested without using the sizing kit, and the fit was spot on. It does seem to sit a little larger on my finger compared to other rings.
The sensor array bump in the ring’s inner doesn’t disappear in the same way as it does on an Oura Ring, but it also never felt noticeable enough to make it uncomfortable to wear.
It’s good to see a level of water resistance that means you don’t have to whip the ring off when you go for a dip. It’s 5ATM rated, making it suitable for showering and swimming. I’ve done both and experienced no issues once I was out of the water.
When it comes to charging, there is a very portable charging case to drop the Sporty Ring into. It’s by far the smallest charging case I’ve seen with a smart ring. It’s not the sleekest, but it does disappear in a pocket or bag. Unfortunately, it doesn’t have its own battery, so you need to plug in a USB-C charging cable to power it up again.
Health and fitness tracking
- Sensors to track heart rate, sleep, stress and blood oxygen saturation
- Approachable AI Coach
- Health Points and Reward system not supported in all countries
There are a few ways the Cudis 002 Sporty Ring operates. The first is to behave much like other smart rings. There are optical sensors to track metrics like sleep, resting heart rate, blood oxygen saturation and monitor daily step counts. I’ve been wearing it alongside two other smart rings and a smartwatch. For data like sleep and step counts, it punches out similar data.
For metrics like heart rate and resting heart rate, the readings seemed a little high compared to other devices. Performing an on-the-spot heart rate reading showed similar real-time readings to my smartwatch, so this inconsistency could relate to the fit of the ring and those sensors remaining in the optimal monitoring position at all times. There is a 2-week period to create your data baseline, and I’d say data accuracy did get better after those first couple of weeks.
Beyond that data that’s presented in your dashboard, lies an AI coach. This takes the form of a chatbot you can have a conversation with about your stats, receive suggestions and recommendations.
I’ve used a few of these AI-style bots on wearables, and what struck me about this one was that I liked chatting to it. The conversations felt natural, not at all static or robotic, and did an effective job of fielding my queries about my day’s data or offering advice on how to spend the rest of my day before getting into bed. This is definitely the way to do an AI coach.
Next up is Health Points, which is essentially a points-based system that rewards you for your progress or for completing certain tasks. Amassing a certain amount of points unlocks rewards like free fitness classes or coupons for free supplements and drinks. The only problem is that it’s only supported in a few countries. I’d picked up enough points for a free gym class; it just had to be claimed at a gym in Malaysia.
Another Cudis metric is Cudis Age. This claims to tell you the pace your body is ageing based on metrics like stress, sleep, recovery, and activity. It sounds a lot like Garmin’s Fitness Age and requires three weeks of data before it can start dishing out your age. Having enough historical data to analyse is pretty key to those age metrics, giving you an idea of whether you’re pretty much ageing as normal or you’re above or below it.
You also have the ability to log workouts, including GPS-based ones using your phone’s GPS. You can also join the Cudis community as a way to stay motivated and see how your scores and stats compare. Currently, you can also connect the ring to Apple Health or Google Health, but beyond that, the app integration is quite limited.
Battery life
- Up to 10 days of battery life
- Fully charges in under an hour
- The charging case doesn’t have an additional battery.
Cudis says the Sporty Ring should last up to 10 days off a single charge. I’d say that’s been pretty representative of my time with it. In fact, I’d say it has the capability to go further than that. This ring can last just short of two weeks without charging. The daily drain and the overnight drain aren’t as severe as I anticipated.
As far as I can see, there aren’t any features you can turn off or disable to push that battery further. Given that it’s already pretty good, that’s not something to hugely worry about.
The charging case, as mentioned, is small. When you drop the ring into it when it’s fully flat, the ring takes roughly an hour to get back up to 100%. So you’re not going to be hanging around too long to get tracking again.
Should you buy it?
You want a smart ring with a more playful design
The interchangeable silicone bands add a nice splash of colour, all while helping to keep your ring scratch-free.
You want the best smart ring for heart rate tracking
While the Cudis 002 Sporty Ring is capable of delivering good heart rate data, there have been occasions where accuracy has been sketchy.
Final Thoughts
I feel like the Cudis 002 Sporty Ring is exactly what the smart ring industry has needed. Smart rings are already starting to look the same and behave the same. This ring wants to show that there’s room for something different.
It’s got a fun look, good core tracking and features like an AI coach you’ll actually want to use. It’s a shame its rewards system isn’t more widely supported because this is a feature that would be great to see on other rings.
There’s a good smart ring here, especially if you are in the right place to make the most of all of its features.
How We Test
We thoroughly test every smart ring we review. We use industry-standard testing to compare features properly and we use the ring as our main device over the review period. We’ll always tell you what we find and we never, ever, accept money to review a product.
- Tested for over three weeks
- Thorough health and fitness tracking testing
- Worn as our main tracker during the testing period
FAQs
No, the Cudis 002 Sporty smart ring does not require a subscription. Once you’ve bought the ring, you have full access to the companion and available software features.
Full Specs
| Cudis 002 Sporty Ring Review | |
|---|---|
| USA RRP | $399 |
| Manufacturer | – |
| IP rating | IP68 |
| Waterproof | 5ATM |
| Size (Dimensions) | x x INCHES |
| Weight | 3 G |
| Release Date | 2026 |
| First Reviewed Date | 08/04/2026 |
