Ultrahuman Ring Pro Review: The Smart Ring That Deliberately Does Away With Subscriptions

With the Ring Pro, unveiled in March 2026, Ultrahuman has significantly enhanced its existing smart ring lineup: more titanium, a redesigned heart rate sensor, a new AI called Jade, and, most importantly, a battery life that, on paper, outshines virtually every competitor. While Oura has long relied on a monthly subscription as a prerequisite for in-depth analytics, Ultrahuman remains true to its core promise: all key health data without recurring costs, but with optional additional features as needed. We wore the Ultrahuman Ring Pro continuously on our finger for several weeks, testing it at night, during workouts, and in a typical office setting, while closely observing just how much of Ultrahuman’s big promises actually hold up in everyday life. Below, you’ll learn how the ring feels to wear, how effective the AI analysis is, and whether the hefty price tag of 499 euros is worth it for you.

Technical Specifications of the Ultrahuman Ring Pro

Case Material	Aviation-grade titanium, unibody design, PVD coating, sensor housing made of epoxy/polycarbonate
Thickness	2.65 mm
Weight	3.3 to 4.8 g, depending on ring size
Sizes	5 to 14; free sizing kit available before purchase
Colors	Bionic Gold, Space Silver, Aster Black, Raw Titanium
Water Resistance	Up to 100 meters
Sensors	Redesigned optical heart rate sensor (PPG), temperature sensor, 6-axis IMU, SpO2 (blood oxygen)
Processor	Dual-core processor with on-chip machine learning
Connectivity	Bluetooth Low Energy 5.3
Compatibility	Android and iOS
Security	ProRelease technology for easier cutting in an emergency
Battery Life (Ring)	Up to 12 days in Turbo mode, over 15 days in Chill mode
Ring Data Storage	Up to 250 days locally
Charging technology	UltraSnap magnetic charging, USB-C-to-USB-C cable included
PRO Charging Case	Up to 45 days of additional battery life, Qi wireless charging, built-in speaker to help you locate it
Software/AI	Jade AI with Standard and Deep Research modes, PowerPlugs for additional features
Health features	Sleep Index, Dynamic Recovery, Stress Rhythm, Activity Index, Ultra Age, AFib detection, cycle and ovulation tracking, caffeine window, respiratory and snoring analysis
Subscription	Core features available without a subscription; individual PowerPlugs available for an additional fee
What’s Included	Ring Pro, PRO charger, USB-C-to-USB-C cable (1 m)
Price (MSRP)	499 euros
Availability	Pre-orders are now open; shipping begins October 10, 2026

Design, Materials, and Comfort

As soon as you unbox the Ultrahuman Ring Pro, it’s clear that the manufacturer didn’t skimp on materials: The entire casing consists of an aerospace-grade titanium unibody; only the small sensor housing on the inside is made of epoxy and polycarbonate. It feels noticeably higher quality in the hand than the thinner Ring Air, which we were already familiar with from previous experiences with the brand.

On the other hand, at 2.65 millimeters thick, the Pro also feels noticeably bulkier. Very bulky, to be honest. Once on the finger, we barely noticed it after the first few days; however, people with very slender fingers or little experience with rings should keep the extra thickness in mind before choosing the largest or smallest available size. Comfort is undoubtedly a matter of personal preference—the ring is definitely quite hefty.

Our test model came in the color “Raw Titanium”; alternatively, Bionic Gold, Aster Black, and Space Silver are available. Before purchasing, you can use a free sizing kit to determine the right size from sizes 5 to 14, which we did before the actual test. However, I have to say that the final product fits a bit looser than the same size (9 in my case) from the sizing kit. I probably could have ordered a size smaller here, but that wasn’t possible at all with the measuring kit—the ring fit significantly tighter there. Oh well.

Weighing between 3.3 and 4.8 grams depending on the size, we could barely feel the ring even after wearing it continuously for several days; especially at night, we woke up several times without even realizing we were wearing it.

We found the ProRelease technology to be practical in everyday life: Unlike some sturdy metal rings, the Ring Pro can be cut open much more easily in an emergency (such as if a finger swells after an injury) than a solid titanium ring without this feature. Naturally, we didn’t test this in a real emergency during our review, but the feature comes across as a well-thought-out detail that you’d actually want in a ring made of such a hard material. The water resistance of up to 100 meters gave us absolutely no cause for concern during our test while showering, swimming, and washing dishes.

Sensors and Build Quality

Inside the Ring Pro, Ultrahuman relies on a redesigned optical heart rate sensor (PPG), which, according to the manufacturer, has been specifically optimized for better signal quality—especially during sleep— along with a temperature sensor, an SpO2 sensor for blood oxygen levels, and a 6-axis IMU for motion data. The entire sensor system is powered by a dual-core processor with on-chip machine learning, which pre-processes the raw data directly on the ring instead of first sending each measurement to a smartphone for analysis.

When measuring heart rate alone during calmer activities such as reading, working at a desk, or going for a walk, the values in our test aligned well with those of other trackers we wore at the same time. These included the Garmin Cirqa (our review) and the FitBit Air. The Ultrahuman Ring Pro, however, was somewhat less reliable when it came to automatic activity detection: In our test, prolonged, irregular physical exertion outside of traditional workout sessions was not always reliably recorded as activity and was therefore sometimes underestimated in the daily activity summary. If you place a high value on complete activity data, you should manually log such sessions in the app when in doubt.

The ring connects reliably to both Android and iOS devices via Bluetooth Low Energy 5.3; we didn’t notice any connection drops during the entire testing period. Up to 250 days of measurement data can be temporarily stored directly on the Ring, ensuring that even extended periods without a smartphone nearby do not result in data gaps.

Sleep and Recovery Tracking in Everyday Life

The primary purpose of a smart ring is continuous health and sleep tracking, and this is exactly where the Ultrahuman Ring Pro impressed us the most during our test. The sleep index clearly breaks down total duration, REM, deep, and light sleep phases, and in our test over several weeks, it consistently matched our subjective impression of each night. After restless nights with frequent awakenings, the app reliably detected this and rated them lower than nights where we slept through the night. This is complemented by Dynamic Recovery, which indicates during the day how much capacity is still available for training or physical exertion, as well as Stress Rhythm, which combines heart rate, heart rate variability, and resting heart rate into a continuous stress profile.

One of the more interesting metrics in the test was Ultra Age, a scientifically derived aging marker that calculates a value for biological age—rather than chronological age—based on the collected vital signs data. Although this feature cannot be scientifically verified in every respect, it did indeed react sensitively during the test to weeks with little sleep and high stress levels, thereby providing us with an additional, motivating incentive to prioritize rest. The AFib detection feature for identifying atrial fibrillation also ran continuously in the background throughout the test, and we didn’t register a single false alarm during the testing phase.

For anyone who wants to track cycle-related data, the Ring Pro also includes a women’s health module that covers the menstrual cycle, ovulation, and potential pregnancy insights. Since we were unable to evaluate this feature ourselves during the test, we rely here on the manufacturer’s claims of over 90 percent accuracy in ovulation prediction; we therefore cannot confirm this from our own experience.

Jade AI and the App Experience

A key innovation compared to previous Ultrahuman models is Jade, the new AI platform that accesses the collected biometric data in real time and transforms it into understandable insights rather than raw columns of numbers. However, our test revealed some teething problems here: It sometimes takes several minutes for the artificial intelligence to process our readings and data and respond to them. On occasion, Jade also refused to work for us at all.

In theory, Jade promises quick, practical assessments for everyday use—such as your current recovery status or whether an intense workout is a good idea today. If you want more detailed information, you can switch to Deep Research mode, which provides significantly more in-depth analyses and, in our test, offered surprisingly clear explanations instead of simply displaying a lower score.

What really stood out to us in everyday use were smaller additional features like the “caffeine window,” which provides a real-time display of the current caffeine level remaining in the body based on your individual metabolism. This is useful for making a more informed decision in the evening about whether that late-night espresso is really still a good idea. The respiratory and snoring analysis ran uneventfully for us, without any nocturnal abnormalities that could have been verified. If you’d like, you can also link Jade to external data sources, such as over 120 Blood-Vision biomarkers from blood tests, continuous glucose monitoring (CGM), or even smart home data.

Overall, the app proved to be one of the most sophisticated (and visually appealing) on the entire smart ring market in our test: complex relationships are presented in an understandable way without overwhelming the user with raw data.

Activity and Sports Tracking in the Test

For workouts and everyday activity, the Ultrahuman Ring Pro provides a continuous overview of steps, workouts, and calories burned via the Activity Index. During controlled comparative tests with other trackers, we noticed that the Ring Pro’s step count tended to be lower than that of devices worn at the same time.

During traditional workouts such as strength training, running, or cycling, the Ring Pro reliably detected when a session began and ended in our test, even when we didn’t manually start the workout. However, automatic detection was somewhat less reliable during unstructured, physically demanding activities outside of traditional sports.

For example, during extended periods of gardening, walking the dog, or painting our apartment—activities that, at times, weren’t recorded as active phases at all in our test. So if you do a lot of irregular physical work and want complete data, you may need to make adjustments in the app afterward.

Battery Life and the PRO Charging Case

The Ultrahuman Ring Pro really shines when it comes to battery life. In Turbo mode—where all sensors measure continuously at full frequency—we achieved about 12 days per charge in our test, which is close to the manufacturer’s stated target. Those who activate Chill Mode instead—which reduces the measurement frequency and focuses primarily on sleep and recovery data—achieved a noticeable battery life of over 15 days in our test. For a wearable of this size, that’s a truly impressive figure that clearly outperforms most smart wrist trackers.

Even more impressive is the included PRO charging case: It provides the Ring with up to 45 additional days of battery life on the go, without needing a power outlet nearby. Thanks to the UltraSnap magnetic charging system, the Ring snaps securely into the case without any fiddling; in our test, charging to full capacity took less than an hour. The case itself can be charged wirelessly via Qi, features a built-in speaker that allows you to locate the case via the app if it’s lost, and includes a smart status indicator.

PowerPlugs Instead of a Mandatory Subscription

Unlike Oura, where in-depth analytics are virtually always tied to an ongoing monthly subscription, Ultrahuman has deliberately opted not to require a mandatory subscription for the Ring Pro’s core features. Sleep Index, Dynamic Recovery, Stress Rhythm, Activity Index, and Jade’s standard analysis are available from the start in our test at no additional cost.

For additional features, Ultrahuman relies on so-called PowerPlugs: individual, mostly free modules for specific analyses, while some specialized add-ons (such as in-depth migraine insights or smart home integrations) remain optional paid features. In our review, we found this approach to be significantly fairer than a flat-rate subscription where you pay extra for a single add-on feature you might never use: In practice, anyone who only needs the basic features really only pays the one-time purchase price—and gets more than enough value for their money.

Ultrahuman Ring Pro Review: Conclusion

With the Ultrahuman Ring Pro, the manufacturer delivers a thoroughly well-thought-out update: a high-quality titanium case, a redesigned sensor, truly impressive battery life—including the charging case—and Jade, an AI analysis feature that, in our test, offered noticeably more depth than most competing products. We were particularly impressed that, despite the premium price, Ultrahuman consistently avoids requiring a subscription. This is an approach we’d like to see from more providers in this market segment.

On the other hand, those who value precise step counts and seamless automatic activity detection will encounter a few limitations of the device in our test, while the Jade AI (at least for now) isn’t yet error-free. The same goes for anyone who finds 499 euros too much to pay for a smart ring. However, for anyone looking for a discreet, subscription-free health tracker with long battery life, the Ultrahuman Ring Pro remains, in our experience, one of the most compelling (but also the bulkiest and thickest) options on the market.