ULTRAHUMAN Ring AIR Smart Ring -Track Sleep, HRV & Stress, No subscription

Over the years I’ve tried Withings, Fitbit, the Google Pixel Watch, and various cheaper off-brand “smart” watches. While some of them do impressive things, I’ve consistently been disappointed — mainly due to poor battery life, awkward small screens for basic tasks, and constant notifications that become more annoying than useful (assuming the battery hasn’t died first). This time, I wanted something simple and unassuming. Something that tracked my steps, sleep, and fitness metrics properly. No mandatory monthly subscription. No distraction on my wrist. Just useful insight. I’d been looking at smart rings for a while. Oura was the obvious comparison — it looks great — but the ongoing subscription cost and the patent disputes in the US put me off. Then I discovered Ultrahuman. Low barrier to entry The ring sizing kit cost me 10p (or I could have 3D printed one using files from their website). That immediately impressed me. By comparison, Oura charges around £10 for their sizing kit and only refunds it if you go on to buy the ring. Ultrahuman made the entry point incredibly accessible. The reviews were strong, battery life looked reasonable (4–6 days), and the app screenshots looked genuinely useful. Setup & first impressions I purchased the Ring AIR (size 11, brushed titanium) along with the Ultrahuman Ring Voyager charger for faster charging. Everything arrived promptly, and I was set up within minutes. The ring immediately told me it would take around 14 days to fully calibrate to my baseline metrics, but useful data started appearing within the first hour — even in “Chill Mode” (a battery optimisation mode that extends life further). For peace of mind, I also opted for Ultrahuman X (~£50 for 2 years), which covers accidental loss/damage. I know I specifically didn’t want a subscription model, but for an expensive device like this, that felt reasonable and optional. Battery life & comfort The ring is extremely comfortable — I often forget I’m wearing it. Battery life is around 4 days for me, and likely could stretch further. Charging with the Voyager dock is quick and painless — comfortably back to full within two hours. The app experience The app is genuinely impressive — and completely free. There’s a lot of data, which can feel slightly overwhelming at first, but Ultrahuman does an excellent job explaining what each metric means. The longer you use it, the more insightful the reporting becomes (weekly summaries are particularly useful). The app also includes “PowerPlugs” — optional add-ons that extend functionality. Many are free (e.g. Caffeine Window), while some are paid. For example, UltraSync for Tesla provides things like Drive Readiness Score and Drive Stress tracking. I was initially wary that this might be the “hidden subscription model” — but there are far more free PowerPlugs than paid ones, and the core functionality is more than sufficient for most users. It feels optional rather than restrictive, which is the right balance. There are also links within the app to Ultrahuman’s other products (Metabolism, Home, Vision). I was slightly concerned these might feel like constant upsells, but they’re unobtrusive. No annoying ads, no aggressive prompts — and if you owned those products, having everything within one app would actually be preferable to juggling multiple apps. Overall I’m genuinely impressed with the Ultrahuman Ring AIR. It’s comfortable, provides meaningful and well-presented insights, has solid battery life, and - importantly - doesn’t lock core functionality behind a mandatory subscription. It does exactly what I wanted: simple, smart health tracking without the noise. Highly recommended. Five stars from me.

When it worked, it was great, but the battery performance falls off very quickly, and one it does, support is frustrating and tedious. My first one ran fine for about 6 months, and then dropped from 4-5 days of battery life to needing to be charged twice a day in the space of about 6 weeks. The only support was accessible through the app, but insisted on repeated updates of firmware and factory resets with the instruction to "monitor it for 48 hours and come back to us" - this process ran for weeks before I lost my patience and insisted on a replacement. The replacement similarly dropped off in battery performance (and also suffered connection issues, regularly losing all data for several days at a time). Support was once again tedious and frustrating, and an update to the app format has made the support chat less straightforward to access. I'm now told (after multiple factory resets etc) that I'm out of my warranty period, and not elegible for a replacement - despite the app's support tool telling me that I'm eligible for a replacement - although as a goodwill gesture they are prepared to send me a certified refurbished ring. I haven't yet decided whether to accept, as I have already swapped to using an arm-worn tracker instead. The app isn't as slick and the insights aren't as helpful, but at least it stays charged for over a week and retains its connection to the app.

⭐️⭐️⭐️⭐️⭐️ Game-Changing for Biohackers, Fitness, and Recovery! I’ve used nearly every fitness wearable out there, but the Ultrahuman Ring AIR is hands-down the best for anyone serious about tracking health, recovery, and performance. What sets this ring apart is the depth and clarity of its data. It gives me real-time feedback on HRV, sleep quality, skin temperature, and activity in a way that’s actually actionable. Since wearing the ring, I’ve learned exactly how my lifestyle (from hiking and strength training to my daily walks and even supplement timing!) affects my sleep and recovery. The sleep tracking is next-level. The ring doesn’t just tell me how long I slept—it breaks down deep, REM, light sleep, restlessness, temperature changes, and even my body’s recovery rhythm. I was shocked at how accurately it picked up on changes after a heavy workout or even a late night out, and it’s helped me dial in everything from caffeine timing to my bedtime routine. Since using the ring, my sleep scores have improved, and I wake up genuinely refreshed. I love how seamlessly the ring fits into my daily life—it’s light, comfortable, and doesn’t need constant charging. The app is user-friendly, visually stunning, and gives personalized recommendations I actually want to follow. What really sold me is how the Ultrahuman ecosystem ties everything together. It’s not just about steps or calories—it’s about truly understanding your body’s readiness, recovery, and how to push for better results without burning out. It’s helped me break a fat-loss plateau, optimize my training, and finally get those deep, restorative sleep cycles that every biohacker dreams of. If you want to level up your health, perform at your best, and unlock a new level of self-awareness, the Ultrahuman Ring is a must-have. I’m obsessed—and I can’t wait to keep smashing my goals with it. Sleep mask or not, this ring has already improved my life. Highly recommended!

I’ve been using the UltraHuman Ring for a while now and have really enjoyed it, especially for sleep tracking — the data feels detailed, insightful, and genuinely useful for improving my rest. The interface is clean and easy to navigate, and I find myself checking the sleep insights almost every morning. However, the exercise tracking is noticeably inaccurate, and I’ve seen this issue mentioned quite a lot by other users as well. It often underestimates activity, which makes it less reliable for fitness monitoring. This is a pretty big flaw for anyone wanting a well-rounded health tracker, and I really hope UltraHuman prioritizes improving this in future updates. Overall, fantastic for sleep data, but exercise tracking still needs serious refinement, as well as connectivity issues.

At first the ring worked perfectly and seemed like a great buy for the price compared to other similar products in the market. However, after just 1 week of use the ring just stopped working. It would not connect to my phone and therefore was rendered useless. I contacted Ultrahuman and they sent a replacement ring out free of charge after quite a bit of back and forth. This next ring worked for about a month and then I had the same issue, not connecting to my phone. I then requested a refund as I was not happy with the quality of the item, great concept but does not work! This is where the real problems started. Ultrahumam agreed to reimburse me for my purchase. However, after weeks and weeks of back and forth, I have still not received a refund. The customer service team have asked me to confirm my bank details 4 times and each time they have said thank you we have sent this across to the relevant team who will process your refund, each time nothing happens and they request my bank details again. The level of service is shocking, they cannot process a simple refund. At this point I do not think I will ever see my refund as the customer service team are totally inept. I would avoid at all cost, unless you want to have a product that works great for only 1 month maximum and never be able to claim a refund if you are unhappy.

I wanted to share my honest experience with the Ultrahuman Ring Air after owning it for an extended period. At first, I was genuinely excited. The ring is lightweight, comfortable to wear, and the concept behind it is strong. The app offers useful insights around sleep, recovery and daily rhythms, and I appreciated the focus on metabolic health without requiring a subscription. However, over time, reliability became a concern. I experienced multiple periods where the ring failed to track data properly, resulting in gaps across key metrics. This wasn’t a one-off issue, but something that happened more than once over the lifespan of the product. For a device positioned around continuous health tracking, consistency is critical, and this is where it fell short for me. To their credit, customer support did respond and offered a replacement. However, the solution provided was a refurbished (“like new”) unit rather than a brand new replacement, which didn’t feel aligned with the expectations for a premium product; especially given the recurring issues. In the end, I opted for a refund, which was processed. Overall, I think the Ultrahuman Ring Air has potential and a strong concept behind it. But based on my experience, there are still some improvements needed around long-term reliability and quality assurance. If you’re considering this ring, I’d recommend keeping an eye on how the product evolves, particularly in terms of durability and consistency of tracking over time.

Blown away by this, very rare I write a review but I feel this deserved one. Ordered the sizing kit and 2 days later ordered the ring, I ordered size 10 and felt the ring itself was a tiny bit bigger which suited me perfectly. The battery life is amazing, I’m easily seeing 4+ days usage without any charge. Topping it up whilst in the shower keeps it going 24/7 for me personally. The app itself is brilliant and full of information, you can add in features which is great. I use a third party sleep tracker and this matches the ring statistics. I ordered this as I prefer a traditional watch over Smart watches and now I get best of both worlds. The connectivity between the app and ring is seamless, setting it up was extremely easy. Appears to be very durable, no scratches or marks despite some hard work whilst working. The gold colour is beautiful, doesn’t look cheap and looks professional. Great product, highly recommend and the best part? No subscriptions!

I wanted to like the Ultrahuman Air Ring, but my experience over the last 12 months has been extremely disappointing. In total, I have had four rings within a year. Three failed due to battery issues, and the fourth lasted just four weeks before developing Bluetooth connectivity problems, making it unusable. This level of failure suggests a serious reliability and quality control issue. (only three in the photo as the fourth has now gone back to Amazon for a refund. What concerned me almost as much as the hardware failures was how the situation was handled. After the fourth failure, I was offered a second-hand refurbished ring as a “goodwill gesture”, despite the ongoing faults and the product clearly not being of satisfactory durability. This offer was made while my consumer rights were initially ignored. Only after I explicitly stated my UK consumer rights and insisted on a refund did the company eventually concede. While the concept of the ring is excellent and the data is useful when it works, a wearable at this price point should not require multiple replacements in a single year, nor should customers have to argue for basic consumer protections. Based on my experience, I cannot recommend the Ultrahuman Air Ring due to poor durability and an unsatisfactory resolution process when things go wrong. I would also like to THANK Amazon for their levels of service.. they dealt with the refund in less than 2 minutes!!.. Stark contrast to Ultrahuman.. Thank you Amazon... Ian D

It works just fine, the customer service is excellent, size fits alright. The pregnancy mode doesn't really do much apart from telling me how far along I am and which stats can be different... and then the app tells me to pay attention to exactly those stats. Okay.

llevo usándolo 3 meses y es parte de mi rutina diaria. La batería dura mucho y las métricas son parecidas a law del Apple Watch así que ya no dependo del reloj tanto. Y estéticamente es guapisimo

La pila dura 2 giorni non 6 le info non sono esatte volevo sostituire L Apple Watch ma non sono riuscito uso di nuovo L Apple Watch

love this ring, purchase the ring size kit before hand and wear difference sizes to see which fits best. also with the material selection keep in mind it can get scratched

Como idea es genial. Para mí, el problema reside en que, aunque compré el kit de medición, el dedo donde aconsejan llevarlo para una medición correcta (el índice) es incómodo en el día a día y si lo usas en otro, al anillo es grueso. Recomiendo comprar el kit y probar varios días con distintos diámetros en distintos dedos.