[This review was collected as part of a promotion.] I have had this ring for an about 4 months. I really enjoy the heart rate monitoring for exercise. I’m not big on wearing a watch, so this is a nice alternative. It does seem to be easily scratched or beat up, but so far that hasn’t affected how the ring works. I also didn’t realize how much I was enjoying tracking my sleep.

[This review was collected as part of a promotion.] At first the battery life was a bit dissapointing. Latest update made it really great. I feel like it's continous developing which I love. I had problems with two rings in a row, but got replacement and good support. The third ring now works great.

[This review was collected as part of a promotion.] I have for a month now. It is very good in tracking sleep and recovery. Tracks sleep cycles, HRV, and social lag which is new. It also adds power plugs which are add one to track screen time caffeine window and also works with Tesla.

[This review was collected as part of a promotion.] I got this about 4 months ago and have loved getting all of the feedback that this ring tracks. It is very insightful and helpful in knowing more about my body and what it responds well to and what it does not. The sleep feature is my favorite by far.

[This review was collected as part of a promotion.] It is an efficient measurement device that helps us track our rest and activities to provide information for improving the areas that need improvement. It is also very small and light, so it is not a burden to wear.

I bought this in March I believe, and I really enjoyed it at first, but once I got an idea of what my results were going to be, I ended up not checking them any more. I don’t find the battery lasts that long, maybe a day and half to two days. I do get compliments on the way it looks, but as for a smart ring, I tend to lean more towards using my smart watch.

[This review was collected as part of a promotion.] The ring works well and detects things really well, except for the menstrual cycle even though I've been wearing it all the time since December, it still doesn't give the right predictions. And when will the weight loss module be available?

[This review was collected as part of a promotion.] I've been using the Ultrahuman Ring AIR for a few weeks now, and the difference in sleep quality and recovery is night and day. The real-time biomarker insights (especially HRV and skin temperature) gave me more control over my routine and helped me make smarter lifestyle choices. It’s not just a tracker - it’s a personal performance optimizer. Looking forward to more firmware upgrades and continued improvements. Great product, strong ecosystem.

[This review was collected as part of a promotion.] I’ll be returning soon, as there were ~8 different support personnels assigned but no sense of ownership to resolve the issue. I liked the ring and the fact that I didn’t need to pay for subscriptions but maybe it’s worth it to pay little more.

[This review was collected as part of a promotion.] I’ve been using the Ultrahuman Ring AIR for a few weeks now, and I’m genuinely impressed. It’s sleek, lightweight (you forget you’re even wearing it), and packed with features that offer deep insights into both fitness and recovery. What I love: Form Factor: The ring design is a huge win. It's more subtle than a smartwatch and comfortable enough to wear 24/7—even while sleeping or working out. Sleep and Recovery Insights: The recovery score and sleep tracking are incredibly accurate. It not only tells me how long I slept, but how restorative that sleep was, which helps guide how hard I should push myself the next day. Metabolic Health Tracking: Paired with the Ultrahuman app, the AIR ring gives great context around glucose variability and how your body responds to food, movement, and rest—especially if you're also using their M1 glucose monitor. Battery Life: Lasts around 4-6 days on a single charge. The charging case is also very convenient. Could be better: No live heart rate: It tracks HRV and resting heart rate well, but doesn’t give live heart rate data like some fitness trackers. Size availability: Sizing can be a bit tricky, so make sure to try the sizing kit before ordering your actual ring. Still evolving: Some features are still in beta or rolling out slowly. But the updates so far have been meaningful. Final Thoughts: The Ultrahuman Ring AIR feels like the future of health optimization. If you're into biohacking, performance training, or just want to better understand your body’s rhythms, it’s absolutely worth considering. It’s not just about data—it’s about making smarter daily decisions. Highly recommended.