[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 ring first in May, and it stopped working in a week's time. The second time, I received the ring from Ultrahuman as a replacement for the faulty ring; this time the ring stopped functioning in 20 days' time. This has to be one of the worst products that I have bought. Once the ring runs out of battery, the ring will not turn back on.

[This review was collected as part of a promotion.] I bought my ring approx. 2 months ago. Pros: I really like the design, it's pretty nice and comfy. The user interface is good enough, I can find everything I want easily. The extensions aka. powerplugs are great additions, not to mention most of them are free of charge. My favorite is the circadian rythm tracker, and the smart alarm is also very useful. Built-in breathworks are nice, also free. Exercise tracking is I think as good as you can expect from a ring, plus there are lots of built-in training types. Sleep metrics I cannot compare with other devices or measurements, so I have to rely on what I see in the app, but I feel like they are rather accurate, at least the quantities for sure. Cons: I really wanted to like this ring and I am liking it, but I have to be honest: sadly I'm currently waiting on my third replacement ring. The first stopped charging after a few weeks, the second had a similar problem, but then after a day of trying it did charge up, but then the sleep metrics were gone. The latter was probably a software issue since the metrics during a breathwork session worked, and the sensor diagnosis stated that everything is fine. Regardless of what the actual problem was, it couldn't be used like that. Both lasted for a month, roughly. I only can hope that I will be luckier with the third. If it is really just about luck..

[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.] The Ultrahuman Ring has significantly impacted my understanding and management of my health, particularly by highlighting the critical role of sleep, sun exposure, and early morning routines. Initially, I underestimated the profound effect of consistent, quality sleep on my overall well-being. The Ultrahuman Ring, through its detailed sleep tracking, has provided invaluable insights into my sleep cycles, including REM, deep, and light sleep phases, as well as my sleep efficiency and latency. By presenting this data in an accessible format, I've been able to identify patterns and external factors that either enhance or disrupt my sleep. For instance, I've learned that late-night meals or screen time severely impact my deep sleep, leading to reduced energy and focus the following day. This awareness has motivated me to prioritize a consistent sleep schedule, create a more conducive sleep environment, and adopt relaxing pre-sleep rituals. The result has been a noticeable improvement in my energy levels, mood stability, and cognitive function throughout the day. Beyond sleep, the Ultrahuman Ring has also shed light on the importance of sun exposure and early morning habits. Its ability to track activity and, indirectly, my exposure to natural light, has made me more conscious of getting outdoors early in the day. I've observed a direct correlation between early morning sun exposure and improved sleep quality at night, likely due to its role in regulating my circadian rhythm. The ring's data has subtly nudged me towards incorporating morning walks or simply spending time outside shortly after waking. This seemingly small change has had a ripple effect, leading to increased morning alertness, better mood regulation, and a more robust daily routine. In essence, the Ultrahuman Ring has transformed from a simple wearable device into a powerful tool for self-discovery and health optimization. It has empowered me with actionable data, fostering a deeper understanding of my body's needs and the intricate connections between sleep, light, and daily habits. This newfound awareness has not only motivated me to make healthier choices but has also provided the objective feedback necessary to track my progress and continuously refine my approach to well-being.

[This review was collected as part of a promotion.] I bought the ring almost two months ago now and really love how it tracks my sleep and helps me understand what triggers a bad night of rest and what I can do throughout the day to improve my energy. I also love the activity tracking aspect, but I which it was more specific on calories after you log a workout.

[This review was collected as part of a promotion.] Bought the ring a few months ago and never regretted it , as my sleeping time is all over, with the parameters given by the ring, I took effort to nap when I have a chance and it makes me more productive in my work.

- - : Autonomy / The sport activity apps could be more friendly and usefull. for example the "3 2 1" timer is really not necessary for me / the ring shape could be thiner + + : the ring make you think about yourself more frequently, it allows yourself to have a really good focus on simple things like sleep schedules or coffee time. Also, after a lung issue, the oxygenation % is reassuring even if not 100% accurate.

[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 got this as a gift 3 months ago and it works perfectly! I use it primarily for tracking my sleep and workouts to get an overview of my progress. The one feature I use the most (and is also the reason I got interested in the product) is the caffeine measurement. My sleep has gotten way better after limiting the caffeine consumption in regards to what the app says. Also a thing to note is that i got the ring with titanium coating and I'm surprisingly amazed of how little the scratches are visible on the ring after 3 months use. Overall a great product!