ULTRAHUMAN Ring AIR – Sleep and Fitness Tracker, Smart Ring for Men and Women, No app fee for standard features, Up to 6 days battery life (Aster Black, 5)

I love all things data and have been using the Ultrahuman ring for over a week now. I do love my Apple Watch but I fear that it lacks real insight into my body.What truly stands out is the data depth. The Ultrahuman app delivers a massive range of insights with an impressive level of detail. From sleep quality to metabolic health and stress levels, the ring doesn’t just tell you what’s happening—it tells you why. And it all syncs effortlessly with my phone, so I’m never more than a few taps away from understanding how my body is doing.The Caffeine Window: Game-ChangerOne of the most underrated yet great features is the caffeine window. Using real-time circadian rhythm data and your recovery metrics, the ring tells you the ideal time to start and stop caffeine each day, with recommendations of drinks to have. I’ve found this to be a game-changer for improving my sleep onset and overall recovery. It’s the kind of detail that feels small at first—but has a huge impact.Sleep Insights: Deep and ActionableSleep tracking on the Ring is in a league of its own. It goes beyond just REM and deep sleep tracking—it gives insights into sleep latency, HRV trends during sleep, skin temperature, and even subtle changes in resting heart rate that correlate with your recovery and stress. The app doesn’t just report this—it interprets it, so you actually understand what needs improvement.Stress Monitoring: A Daily CompassThe stress features are something I now rely on throughout the day. With real-time stress level detection based on HRV and other biosignals, the ring gives me a live reading of how my nervous system is responding to work, workouts, and life. The moment it starts trending high, I know when to pause, breathe, or adjust—before I hit burnout. It’s like having a stress thermostat on your finger.Compact and Always With MeThe form factor deserves praise too. It’s lightweight, doesn’t get in the way of workouts or sleep, and doesn’t need charging every day. Yet, it packs in all the sensors to deliver rich data continuously while looking good on my finger. Combined with the beautifully designed app interface, all this power lives in my pocket and doesn’t demand extra time or effort to engage with.Overall, I highly recommend an Ultrahuman ring and can’t wait to see all the updates the Ultrahuman team will bring out.

After research i thought this ring was best, the app is amazing and useful rather than just a data collection tool. The analytics are great and very comfortable to wear, battery life around 5 to 6 days.

At first the ring worked perfectly and seemed like a great buy for the price compared to other similar products in the market. However, after just 1 week of use the ring just stopped working. It would not connect to my phone and therefore was rendered useless. I contacted Ultrahuman and they sent a replacement ring out free of charge after quite a bit of back and forth. This next ring worked for about a month and then I had the same issue, not connecting to my phone. I then requested a refund as I was not happy with the quality of the item, great concept but does not work!This is where the real problems started. Ultrahumam agreed to reimburse me for my purchase. However, after weeks and weeks of back and forth, I have still not received a refund. The customer service team have asked me to confirm my bank details 4 times and each time they have said thank you we have sent this across to the relevant team who will process your refund, each time nothing happens and they request my bank details again. The level of service is shocking, they cannot process a simple refund. At this point I do not think I will ever see my refund as the customer service team are totally inept.I would avoid at all cost, unless you want to have a product that works great for only 1 month maximum and never be able to claim a refund if you are unhappy.

Bought this fitness ring after doing my research. I wanted a tracker I could wear at work, as I have to be bare below the elbow, so my Apple Watch is redundant. I like the sleep tracker, it gives a lot of data that seems pretty accurate. The step and heart rate monitoring both seem reliable too. However I’m disappointed in the colour. The gold is really quite brassy and very shiny. I have small hands so found it a little chunky at first but am used to that now and find it comfortable to wear. I wanted a ring without a subscription and on the whole am happy with this one. It was easy to download the app and link the ring on my phone. It charges quickly and lasts for approximately 4 days, but there are different modes that can increase battery life. One improvement would be a portable charging case, but other than that, this ring does what I wanted it to.