[This review was collected as part of a promotion.] I bought my Ultrahuman Ring AIR about 9 months ago and I love it! I love being able to see patterns and progress. It pushes me to change habits that I didn't know I could improve on. I like seeing the factors that I can change or improve on. It also pushes me to sleep more!!

I bought my ring secondhand but brand new. The person I bought it from told me that they sent their original ring back because the battery life significantly dropped after just over a month of use. Ultrahuman sent her a brand new ring which I then bought from her - and I've had the same experience. The battery used to last several days and now it maybe lasts a day and a half. I've only had it for a few months. Battery life aside, I do enjoy exploring the information provided, particularly my sleep scores, cycle, and movement throughout the day.

I bought the Ultrahuman Air approximately 2 months ago and I'm content with it. I haven't had any problems with it so far. My only complaint is that when I bought the ring, it was advertised with a battery life of up to 6 days. I can go about 3-4 days in between charges and I have it on chill mode. I have the raw titanium color and it gets scratched pretty easily. Other than that, I love the ring.

[This review was collected as part of a promotion.] I've been using the Ultrahuman Ring for a few months now, and I can confidently say it's one of the best health and wellness devices I've ever owned. What truly stands out for me is the incredible sleep tracking. The insights it provides are not only detailed but also actionable. I can now understand how different habits affect my deep sleep, REM cycles, and overall recovery. The best part? The ring is so comfortable, I forget it’s even there. It’s on my finger 24/7—through workouts, showers, and while I sleep—and it never feels intrusive. The continuous monitoring gives me a full picture of my health, but sleep tracking is where it really shines. The app is intuitive, and I love how it breaks down complex sleep metrics in a simple, visual way. I’ve genuinely improved my bedtime routine and energy levels thanks to the guidance it provides. If you're serious about improving your sleep and overall well-being, I can't recommend the Ultrahuman Ring enough.

[This review was collected as part of a promotion.] I’ve been using it now for 2 months and am really happy overall with my experience. As a runner, I find all of the cardio age and vo2 max statistics really helpful and it’s been great to see them changing the longer I use the ring. The battery is good, I charge it whilst I’m at my desk every few days or so and it’s relatively fast to charge to full battery. My only reason for not giving it 5 stars is the period tracking. I was under the impression that as it measures your body temperature it would predict cycle outcomes based on this, not just 28 days. As someone with an irregular period, if it is late, the app just says that my period is in an unknown phase. It seems to basically be their own version of an app such as flo. I don’t find it to be any more accurate, despite the body temperature measuring.

[This review was collected as part of a promotion.] I've been really satisfied with the Ultrahuman AIR. It's made a noticeable difference in both my sleep and morning routines. One of the biggest improvements I've seen is how much quicker I fall asleep—something I used to struggle with. The insights provided by the device have been genuinely helpful in understanding and optimizing my habits. I'm also really excited about the new tag system and what it will bring. It looks promising and could add even more depth to the insights and tracking. If I had to point out a downside, it would be that the step count seems to be underestimated compared to other devices I've used. It's a minor issue, but worth noting. Overall, it's been a great addition to my wellness toolkit.

[This review was collected as part of a promotion.] I bought my ring 13 Month ago, and sadly the first versions I received had some problems. On the first one after 2 Month all sensors stopped working but Ring was still charged. On the second and the third ring the epoxy got weak after 4 Month and pieces of epoxy fell out where upon the ring either stopped working fully or took a day to charge and half an hour to discharge. The forth ring I received now 3 Month ago and sofar so good, Epoxy still normal, sensors work fine and battery all ok. All broken rings replaced under warranty without discussion. As for its functions, it is just great, I use it the most to track my sleep and heartrate, but also tracking sports is easy. What I like the most is that you do not notice wearing it, due to its weight, same or lighter then other "normal" rings.

[This review was collected as part of a promotion.] Overall, I'm very happy with my Ultrahuman Ring AIR. The tracking features are great, the battery life is good, and the app is very user-friendly. My only complaint relates to the fading of the ring over time. I have had my ring for just under 1 year and it has gone from gold to mostly silver due to fading.

[This review was collected as part of a promotion.] I bought this ring 2-3 months ago and it has been a game changer. I love this ring. The powerplugs really enhance your experience and you can really understand your body better. The only negative thing I have about this ring is that I purchased the cardio adaptability but I have not seen it provide any actually insights. There is no section for cardio adaptability and no way to really see how it helps you experience. I don’t know if I have to activate my subscription but there has also been no button to do that. Overall great health tracking and sleep tracking.

[This review was collected as part of a promotion.] I love this ring! One of my favorite features is the caffeine window and the sleep tracking. I’ve always wondered when i should be tapering off caffeine and what time is best to start getting to bed. If you’re looking to better your health habits, you won’t be disappointed.