[This review was collected as part of a promotion.] 7 months into the ring and it's getting worse by the hour. It doesn't even hold a charge for 24 hours any longer, ever since it has been exposed to the chill mode... so I miss out on sleep tracking, don't dare to track fitness.

[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.

[This review was collected as part of a promotion.] O bought the Ultrahuman ring 2 months ago and have been using it on it's power setting ever since. After an initial calibration period, it provides valuable insight into your body's vitals and supports you to make changes. For me, it's the best alternative to a smart watch which I wouldn't wear 24/7 and which would therefore defeat it's use. I would love for the ring not to remind me on an ongoing basis to leave power mode and go into "chill" mode. I prefer having all features turned on and don't mind charging it every few days. The ring is extremely lightweight. A next improvement could be reducing it's thickness (it is already very thin!).

[This review was collected as part of a promotion.] The Ring has been a helpful assistant for my health. The ability to have a device that is lightweight, and minimalist makes me forget that I’m wearing it at all. I love how insightful the device is, been able to track sleep, heart rate patterns and caffeine intake were things I need in a device and this ring does all those factors right.

[This review was collected as part of a promotion.] I’ve been using the Ultrahuman Ring for several weeks now, and I can confidently say it’s become an essential part of my health and fitness routine. What sets it apart for me is how seamlessly it tracks sleep, recovery, and overall readiness without being bulky or intrusive. I wear it 24/7, and often forget it’s even there. Sleep tracking has been especially impressive. The insights into my deep sleep, REM cycles, and HRV have helped me make meaningful changes to my bedtime routine. I’ve noticed that on nights where I prioritize wind-down, my ring reflects the quality improvement—and I feel it too. The daily recovery score is one of my favorite features. It helps me decide whether to push hard in the gym or take a lighter day. It’s like having a coach who reminds me to listen to my body without the guesswork. I’ve noticed better energy levels and fewer slumps since I started using the ring to guide my training intensity.

[This review was collected as part of a promotion.] The ring has helped me triply track how much I’m moving (or not!). It’s also really fun to look at the insight for my sleep and be able tot reflect how certain habits impact my sleep more than I thought. I’m pleasantly surprised at how accurate the ring is at tracking my time of the month, especially as it’s all over the place.

[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.] It's super comfortable to wear. Nice accessory to wear. It's helped me to get better rest by managing my caffeine intake. Helped me to get better rest by going to bed earlier as it was showing me my sleep patterns.

[This review was collected as part of a promotion.] Have had the ring for 1 year now and has been great. Build quality is good, no physical issues. Consistent updates have improved functionality. Some updated caused issues with battery life but subsequent updates have corrected any problems. I have a smart watch and the data between the 2 devices is very similar, with the ring providing a what I feel is more accurate sleep data than the watch.

[This review was collected as part of a promotion.] I wrote this as my review: Love the app for the ring. I've gained good insights into what affects my sleep for better or worse. The insights from the ring are much, much more in depth than I initially thought before I bought the ring. I had learned that while my sleep was good, my "morning alertness" was a big cause of why I felt so tired, so I've made major changes to stop checking my phone first thing in the morning and get moving instead. I knocked off one star mostly for battery life -- wish it were better. Other than that, I've stopped wearing my fitness watch in favour of the ring for its small form factor and detailed tracking.