[This review was collected as part of a promotion.] This is one of the best purchases I’ve ever made. I really love the ring — it looks great, feels great, and works reliably. What I value most is that the Ultrahuman Ring does not require a subscription. That was a dealbreaker for me — I didn’t even consider rings like Oura. I’m happy to pay significantly more (even 30% more) for a device if it offers strong baseline functionality with no recurring fees. Please never move core features behind a paywall — that would be a reason for me to stop using it. I’m strongly against subscription models as the only entry point. I’m fine with paying for optional add-ons — that model makes sense and I’m even considering a few. One small improvement I’d love: slightly longer battery life, maybe +1–2 days. Otherwise, amazing product.

[This review was collected as part of a promotion.] "I’ve been using the Ultrahuman Ring AIR for about two months now, and I chose it over other smart rings because of its impressive hardware and intuitive software. One major plus is that it works seamlessly with both iPhone and Android, which made it a versatile choice for me."

[This review was collected as part of a promotion.] This was a great purchase! Thanks to the caffeine window feature, I stopped drinking coffee right after waking up and started feeling more energized during the day. It also motivates me to stay more active during the day, and offers many interesting insights into my health. I really like that they are rolling out new features all the time!

[This review was collected as part of a promotion.] I've worn my ring religiously for two months, and I've been incredibly impressed in both the metrics, the customer service, and the app. The app is constantly evolving, which I love. At first, I found reading the data confusing, but as the app evolves, it is taking on a more "normal human" way of explaining things. I wouldn't mind the ability to choose between "normal human" and "intelligent data" with YouTube videos explaining--for example--what an HRV is and how it applies to your health and wellness. But I digress. Looks -- I wear gold exclusively. Dainty 14K gold jewelry at that. Not one person has clocked that this is a "smart ring." Comfort -- I wear mine on my right hand, index finger. It is more comfortable (and better protected) on my middle finger, but sometimes my sleep isn't tracked. The size must be just barely different from one finger to the next. (I also loved it on my ring finger, but my husband and BFF both preferred the index.) Durability -- For two months of nonstop wear, the ring has a few scratches. Mostly from holding a fork. (This is probably why they recommend wearing the ring on your NON-dominant hand. Why don't I listen?) Steps -- I wanted a kick to add more movement to my life. I enjoy that this tracks steps without my having to wear a bulky "fitness watch." However, if you are a desk-job girlie with a standing desk and a walking pad, this won't track anything. Something to keep in mind. I get around this by wearing a very old Apple Watch on my ankle. (A girl's gotta do what a girl's gotta do.) Cycle -- I skip multiple periods with medication. I have 3-4 a year. My ring seems to be keeping up with my cycles, regardless which is very interesting! Though it did have a bit of a tantrum when it was expecting my period and it didn't come for another week. Again, I've only had the ring for two months. I don't blame it for being confused. I'M confused. Hopefully, together, we can figure it out. I've learned so much about the different phases of a woman's cycle, though! The fact that it can warn me about upcoming mood swings or a possible decrease in immunity is AMAZING! I'm learning so much! Caffeine -- The caffeine window is so fun and improving every day! Now I can track WHAT I drink (which automatically calculates how much caffeine in mg) and WHEN I drink it. Love, love, love. Tags -- OMG THE TAGS. If you've had sex, protected or unprotected, if you have alcohol, what kind, if you're sleeping somewhere new, and so on and so on. I'd love more emotional options, but they still have options! And you can always create your own. However, I try not to create my own because there isn't a way to categorize the type of tag (for example: Emotional/Intimacy/Environment). Basically, you get OUT of the ring what you put INTO it. I'm having a great time.

[This review was collected as part of a promotion.] I’m thoroughly impressed with the Ultrahuman Ring AIR. The build quality feels premium — lightweight, comfortable to wear, and beautifully designed. What stands out the most is the accuracy of its health tracking. From heart rate and HRV to sleep and daily activity metrics, the ring provides consistently reliable data that helps me better understand my body and lifestyle. The app integration is also seamless, offering clear insights and helpful suggestions without being overwhelming. Battery life is great, and charging is quick and hassle-free. One word: Impressive. This ring has become an essential part of my wellness journey.

[This review was collected as part of a promotion.] Bought the Ring AIR about five months ago, mainly because of the no-subscription business model, and the other reason was for sleep tracking. It has been amazing to see trends over time, and the ability to easily access all the data as a csv file has been really helpful. Only a few days ago I decided to improve my sleep with supplements, and after four days of taking two of them (magnesium glycinate and L-theonine) I've seen measurable improvement. Having data regarding sleep stages, sleep time and other metrics like HRV and temperature drop has been super-helpful. I wear the ring all the time, and am happy to start tracking my workouts now as well. Highly recommended!

[This review was collected as part of a promotion.] I’ve been using the ring for about two months now, and overall I’m very happy with it. The ring hasn’t discolored at all and still looks like new. It’s very comfortable to wear, even while sleeping or during workouts. I use it regularly for strength training, and it never gets in the way or feels uncomfortable. It’s especially great for sleep tracking — very accurate and insightful. One downside is that you can’t see things like calorie burn in real time; you only get the data afterward. Also, the battery life is a bit shorter than advertised. I usually get about 4 to 5 days per charge. Still, compared to a smartwatch, this is already a big improvement for me. All in all, I’m really satisfied with this ring and would definitely recommend it for anyone looking to track sleep and activity in a more subtle way.

[This review was collected as part of a promotion.] I bought the Ultrahuman Air because I want to track my sleeping patterns. For someone who is doing shifing duties and can’t sleep with a watch on I find this one suitable for my needs. It really showed me how deranged my sleeping pattern was and help me to managed it. Very happy with the ring. I’m using all of its features now esp the brain age.

[This review was collected as part of a promotion.] I have been using this Ring since last 8 months, easily the best wearable on the market. It's so lightweight and non intrusive. I have an Apple watch too but I mostly prefer this for sleep tracking any day. The sleep and stress scores are really accurate. Also love the caffeine window feature a lot, really helps me keep my caffeine in check and the app insights have significantly improved my sleep and recovery!

[This review was collected as part of a promotion.] Been using the ring for a while now, came over from an oura gen 3. The ring is infinitely more comfortable. I forget I'm wearing it about 90% of the time. Helps me manage caffeine intake, and knows when I'm feeling rough and suggests options for helping!