People care a whole lot about the quality and state of their health. As they add more protein to their dinner plates, rush to reach their daily step count, or prioritize a consistent and early bedtime, they're also tracking these healthy habit shifts through health wearables like smartwatches and smart rings.
Also: The best Black Friday smartwatch and fitness tracker deals
I've tested every popular smart ring on the market, and found that while smartwatches are effective trackers for exercise, smart rings perform many of the same functions but in a more discreet, screenless, and comfortable form factor. They also last many days longer than your Google Pixel Watch or Apple Watch.
All these features and more have made smart rings a hot topic in health tracking and a hot commodity on the market. readers have been loving smart rings this year, and we gathered the data on which smart rings readers bought the most through links in reviews, buying guides, and other content (a note: your privacy is protected -- we only have access to aggregate data from our user base, and there is no way for us to identify individual people's purchases). Here are our readers' most-purchased smart rings of 2025 so far.
The 3 most popular smart rings among readers in 2025
Oura Ring 4
The Oura Ring 4 is a top seller among readers for several reasons. Though it's one of the most expensive smart rings with a pesky $70 annual subscription, it excels at its core functions and is constantly developing new, useful features that make the high price worth it. It's also our pick for the best smart ring you can buy.
The smart ring continuously tracks heart rate, heart rate variability, body temperature, and breathing rate. Through the data it captures, it creates a baseline for daily sleep, readiness, and activity scores. Each morning, I wake up to scores and information about how long it took my heart rate to drop during rest, my activity levels, and how they compare to my general trends, and how well my body bounced back from a day of stress.
Review: Oura Ring 4
The smart ring also tracks your menstrual cycle, monitors possible signs of illness or strain through Symptom Radar, displays your daily heart rate trends on a chart through Daytime Stress, and illustrates daily stress's impact on your general wellness through Cumulative Stress.
The smart ring's bevy of data it monitors on you can be helpful if you're looking to further institute healthy habits, but I'd recommend passing on the smart ring if you are sensitive to receiving low health scores or obsessing over a bad week of sleep. Many friends of mine who work stressful jobs or lead active social lives, keeping them out late or making it difficult to get regular sleep, say they stopped wearing the ring because of their poorer scores.
The smart ring lasts for around five to six days with normal use. It comes in a wide array of sizes and several finishes. Plus, Oura just unveiled its Oura Ring 4 Ceramic, a poppy lineup of pastels and rich hues that adds a touch of color to the smart ring.
Deal: For Black Friday, the Oura Ring 4 is discounted by 30%, taking up to $150 off the starting price at both Oura and Amazon.
2. Ultrahuman Ring Air
The Ultrahuman Ring Air is similar to the Oura Ring in several ways, with the only difference being that the Ring Air is subscription-free. If the Oura Ring is the girl next door of smart rings, the Ultrahuman Ring Air is the Bitcoin-mining, Soylent-drinking next-door neighbor, as I write in my review of the device.
Review: Ultrahuman Ring Air
The smart ring is made for people looking to optimize their health in the name of longevity and physical and mental potential. Alongside its usual sleep and activity-tracking functions, Ultrahuman also offers up "Power Plugs" that monitor everything from your daily sunlight intake, your permissible caffeine intake window, cardio adaptability, screen time, stress rhythm, and more.
The design of the smart ring's app is intuitive and on par with Oura. Its battery life also lasts similarly long.
3. RingConn Gen 2 Air
The RingConn Gen 2 Air is the most affordable option on this list. At $200, the smart ring is an effective yet understated health tracker. It's subscription-free and has one of the longest battery lives on this list, lasting eight or nine days. Plus, its sleep monitoring features rival other competent health trackers.
Review: RingConn Gen 2 Air
The smart ring performs the bare-bones functionalities that will please first-time users, making it a great ring for people who don't know if they're ready to commit over $300 (and a $70 annual subscription) to the Oura Ring. Unlike the two options above, the RingConn app is underdeveloped and feels like a cheaper product. But if you don't care about aesthetics and simply want to know how well you're sleeping, it's a reliable and affordable option.