The RingConn Gen 2 and Ultrahuman Ring Air are two superb alternatives to the industry’s heavyweights, Oura and Samsung.
Like those other top smart rings, the principal focus is on health and wellness. Yet, key distinguishing features separate these crowdfunded options.
RingConn has blown the competition away with its slimline and long-lasting Gen 2 design, while the Ultrahuman Ring Air emulates much of Oura’s app presentation skills with a few neat, exclusive features.
Discover which is best for you with this full comparison.
Check out our full reviews:
Price comparison and versions
The Ultrahuman Ring Air costs $349/£329, and there are no subscription fees or phone ecosystem requirements—a big tick in its favor.
The Indian brand also offers a few more finishes than RingConn: glossy versions of black, silver, and gold, as well as matte alternatives in titanium and grey.
RingConn’s Gen 2 is slightly cheaper: $299/£299 for all finishes and sizes (matte black, and glossy silver or gold). Like Ultrahuman, there’s no monthly subscription fee – and it works with iOS or Android.
Design and comfort

RingConn’s latest ring torches the Ultrahuman Ring Air when comparing design and styles. It’s much thinner, measuring just 2mm to Ultrahuman’s 2.4mm, and the square-ish design of the ring makes it feel like a premium product.
The difference in weight isn’t perceptible, given both rings weigh between 2-3g (depending on size), but we prefer Gen 2 due to the added finesse. It’s not quite as susceptible to scratches (though we have only tested the notoriously scratchable matte black finishes of both rings), and is as close as any smart ring on the market to the feeling of a ‘normal’ ring.
We should also note the similar size offerings of this pair. Ultrahuman slightly edges RingConn, with sizes for the Ring Air ranging from 5-14, though the latter still offers a decent amount of choice with its 6-14 options.
Neither does half sizes, though, so be sure to use each testing kit before locking in your choice; smart rings all have quite a unique feel due to the inner edge’s sensor contours and raised bumps.
Winner: RingConn Gen 2
Health, sleep, and stress tracking

We think you get a good experience in this area no matter which smart ring you pick, though we do think the presentation from Ultrahuman pips RingConn – and it also boasts a few more neat features.
RingConn is an almighty tracker if you prefer lots of raw data. There are virtually countless graphs for you to sift through and try to gain insights, on things like morning stress, nighttime breathing rates, HRV, skin temperature, and sleep stages. Almost all of what we’ve tracked aligns with baselines from Oura, Whoop, Apple, and Google, too.
Yet, the graph-heavy approach isn’t one we grade as effective for most people in the long term. We much prefer when key info from a breadth of metrics can be cross-examined to provide us with an insight that can potentially lead to some behavioral change – or confirmation of our current patterns.

There’s not a lot of that going on with RingConn, only currently done through the ‘Wellness Balance’ feature, which is hurt by the activity insights and tracking (more on this below).
Ultrahuman is by no means a perfect example of presentation, either, but we do think it’s a friendlier app to navigate around and gain an idea of what’s being tracked. It boasts similar insights into heart rate, sleep, SpO2, and stress, and, like with RingConn, much of this data stacks up.
Yet, it’s more personalized and insightful than its rival – even if some key metrics (respiratory rate, for example) aren’t present. You’ll get advice on caffeine intake based on your sleep-wake times, and some leading insights into your circadian rhythm and recovery. It will also offer metabolic health insights if paired with an Ultrahuman M1 CGM solution.

Ultrahuman is slightly more advanced in women’s health features, as well. Both can offer menstrual cycle insights via skin temperature, but Ultrahuman’s PowerPlugs (apps that users can add to the experience separately) does feature an option for a pregnancy mode.
There are also add-ons for jet lag, atrial fibrillation detection, weight loss, and even vitamin D intake, so there’s a lot more to the health tracking experience here.
Winner: Ultrahuman Ring Air
Activity tracking

Neither of these are trackers we recommend for anything other than basic tracking: steps, calorie burn estimates, stand hours, and other suchlike. Accuracy here is passable enough for you to get a general gist of your movement levels, but don’t expect anything more advanced.
Part of the issue here is the integrations. Ultrahuman can pull in supplementary data from Apple Health, Garmin, Polar, and others, but we’ve found that it’s pretty inconsistent at doing so, or capable of fudging the figures.
RingConn has even fewer partners to join up with, only allowing data in from Apple Health and Google Fit. So, unlike a platform like Oura or Samsung, it’s not as easy to supplement the solid health and wellness experience with data from a tracker more suited to the job.
The other major issue here is that workout tracking is pretty barebones. RingConn’s Gen 2 is better in this area, at least offering dedicated modes for indoor/outdoor running, outdoor cycling, and outdoor walking, but this segment of the experience is still very much in beta. Heart rate data, for example, was okay in our testing, but nothing you should be relying on.
Ultrahuman added support for automatic workout detection earlier this year, and you can access VO2 max estimates from sleep data via a PowerPlug, but, again, it’s not a workout tracker we recommend for accuracy.
Winner: Draw
Battery life

This is another area in which RingConn massacres the competition – including Ultrahuman.
The Gen 2 ring is as long-lasting as any smart ring we’ve tested (which is pretty incredible, given how it’s also the thinnest and lightest), with our size 12 ring enduring 10-11 days when the sleep apnea feature is disabled.
When it does need a top-up, it can also be popped into a charging case, which is powerful enough to provide a further 15 full recharges. So, you’ll be doing extremely well if you ever run out of power with the Gen 2.
Ultrahuman’s Ring Air is still a multi-day smart ring, but its numbers aren’t quite as impressive. In testing, we found most charge cycles would last 4-5 days, a little under the week quoted by the brand. Unlike RingConn, it also doesn’t come with a charging case – and can take 2-3 hours to go from flat to full on the included charging puck.
Winner: RingConn Gen 2
Verdict
If the household-name smart rings aren’t to your liking, the RingConn Gen 2 and Ultrahuman Ring Air are certainly solid enough to provide an accurate overview of health and sleep.
We think Ultrahuman has the edge when it comes to personalizing the experience and helping you get more out of what’s being tracked, but the design has already fallen behind the power curve (despite only being released last year) and battery life is only average.
RingConn’s Gen 2, on the other hand, is cheaper than the Ring Air, much more comfortable to wear, and lasts for around twice as long before requiring a recharge.
When making your choice, just remember that both brands have serious work to do in integrating activity data and improving the native workout experience.