We Spent Last 3 Months Testing 18 Smart Rings To Find The Most Accurate One in 2025
After struggling with poor sleep, inconsistent recovery, and screen-induced stress, we started exploring wearable technology that could actually help us improve our daily well-being in a measurable way. Smartwatches felt bulky and distracting—so we turned to something sleeker: smart rings.
While some smart rings promise revolutionary tracking, finding one that’s accurate, comfortable, and reliable is harder than it seems.
That’s why we spent the last 3 months personally testing 18 of the most popular smart rings—and documenting which ones actually delivered real insights and lasting benefits.
We tested 18 smart rings, including models from Herz 1, Oura Ring, Ultrahuman Ring Air, Circular Ring, and Evie Ring. We rated the top five options based on the following criteria:
Accuracy of Tracking
From sleep stages and HRV to blood oxygen and skin temperature, a smart ring is only as good as its sensors. We used third-party devices and manual logs to evaluate how accurate each ring was in tracking biometrics like heart rate, sleep quality, and stress response throughout the day and night.
Comfort & Design
A smart ring should feel like a natural part of your hand—not a constant reminder that you’re wearing tech. We assessed comfort across full-day use, workouts, sleep, and even typing.
Battery Life & Charging
You don’t want another device that needs daily charging. We prioritized rings with multi-day battery life (at least 3–7 days) and quick, intuitive charging solutions. Bonus points for travel-friendly magnetic docks and wireless charging.
App & Insights
Great hardware needs equally smart software. We evaluated how each brand’s app translates raw data into meaningful, easy-to-understand insights about your recovery, readiness, stress, and sleep.
No Subscription Costs
Most of smart rings nowadays have monthly subscriptions, we checked the actual cost of each subscription and found good models without monthly subscription.
After 3 months of testing, here are the 5 best smart rings of 2025
Edward H. - Technician Specialist
With over 17 years of experience in creating tech gadgets, Edward knows everything about smart rings. In this review, he helped us test various options to find the most accurate one.
Overall Grade
A+
Ratings
9.8/10
OVERALL ANALYSIS
Herz P1 is by far the best and most accurate smart ring on the market.
The first thing we noticed right away was how comfortable and lightweight it felt—unlike bulkier rings that become distracting throughout the day or during sleep.
It can track over 37 important healthy metrics and give you alerts if there are any serious issues.
This advanced wearable is designed to optimize sleep, enhance recovery, and provide deep insight into stress and performance, making it an excellent tool for anyone serious about tracking their wellness with precision.
Unlike other brands that charge monthly subscription, Herz P1 is completely FREE to use.
What we also appreciated were its subtle yet powerful HRV and temperature tracking capabilities, which gave us better insight into daily recovery and stress response.
You can also track correct sleep score and it shows you all the info you need to optimize your health – even body fat, stress levels, etc.
What you’ll love is how quickly it charges and how long it lasts—up to 14 days on a single charge, plus a sleek magnetic charger that makes the whole process effortless.
Along with free shipping, the Herz P1 comes with a 30-day satisfaction guarantee, giving you peace of mind to test it without risk.
If you’re not satisfied, you simply get your money back.
Also, it has over 37,000+ happy customers that are using it daily.
Pros
99.97% Tracking Accuracy
Over 37 Key Health Metrics
Advanced Sleep Insights
Battery Lasts 2x More Than Others (14 Days)
No Subscription
You Don't Even Feel Like It's On Your Finger
Most Advanced App With Reports
Real-Time Stress Monitoring
Water Resistant
Over 37,000 Happy Customers
100% Money-Back Guarantee
Cons
Often runs out of stock due to high demand
WRAP-UP
The Herz P1 Smart Ring is competitively priced for a market-leading wearable with cutting-edge tracking technology. Take advantage of this limited-time offer while supplies last.
The Herz P1 was unanimously voted the best and overall most accurate smart ring of 2025.
Overall Grade
B+
Ratings
8.8/10
OVERALL ANALYSIS
The Ultrahuman Ring Air offers a lightweight and sleek design with solid health tracking features focused on sleep, heart rate, and recovery.
This ring is easy to wear all day and night without discomfort, making it convenient for continuous monitoring. It provides reliable data to help you optimize your wellness and daily performance.
With water-resistant build, you can trust the convenience and durability of this device. The Ultrahuman Ring Air is designed to suit both beginners and those serious about tracking their health.
What we noticed is that some users report occasional inaccuracies in heart rate monitoring during workouts, and the app can feel less intuitive compared to competitors. Compared to our #1 pick, the Herz P1, the Ultrahuman Ring Air’s software experience isn’t as polished.
Pros
Lightweight and comfortable for all-day wear
Easy ot use
Tracks sleep, heart rate, skin temperature, and movement
Water-resistant up to 100 meters
Sleek, minimalist design
Provides useful recovery and wellness insights
Decent battery life (around 4 days)
Cons
Pricey monthly subscription ($49/mo)
Heart rate tracking not so accurate
Overall Grade
B
Ratings
8.3/10
OVERALL ANALYSIS
The Circular Ring 2 is a standout among smart rings, offering a powerful blend of features that cater to a wide range of users.
With advanced sensors tracking heart rate variability, sleep quality, temperature, and activity, this device is designed to provide deep insights that help optimize recovery and daily performance. What sets it apart is its sleek design combined with a user-friendly app that offers clear, actionable data.
Each day of wear delivers precise biometric feedback, making it a convenient and effective tool for monitoring your health around the clock.
With long battery life and durable materials, the Circular Ring 2 ensures reliable performance and comfort over extended use. Whether you want to improve sleep, reduce stress, or track fitness progress, the Circular Ring 2 stands out as a dependable and high-quality wearable.
Pros
Accurate heart rate variability and sleep tracking
Sleek, modern design suitable for everyday wear
Long battery life lasting up to 5 days
User-friendly app with clear, actionable insights
Comfortable and lightweight for all-day use
Tracks skin temperature and activity levels
Durable build with water resistance
Cons
App can occasionally have syncing issues
Lacks some advanced fitness tracking features
Higher price point compared to some competitors
Overall Grade
B
Ratings
7.8/10
OVERALL ANALYSIS
The Oura Ring is a top-tier smart ring that offers a wide range of benefits for users seeking to optimize their health and wellness. With its precise sensors and advanced technology, this device delivers highly accurate tracking of sleep, heart rate variability, temperature, and activity, making it a potent tool for those aiming to improve recovery and daily performance.
One of the key strengths of the Oura Ring is its ability to provide deep insights into sleep quality, readiness, and overall vitality. Its intuitive app helps users understand and manage stress, optimize rest, and maintain balance throughout the day. Additionally, the ring’s sleek design and durable build make it suitable for continuous wear by both men and women.
Overall, the Oura Ring stands out as a premium choice for individuals looking to enhance their well-being through reliable, data-driven insights delivered in a natural, unobtrusive wearable.
While Oura is one of the most popualr choices, we believe it’s a bit over-hyped and some features aren’t as the “same” as they’re advertised.
Pros
Premium option
Intuitive app with actionable health insights
Lightweight and comfortable for all-day wear
Long battery life (up to 5 days)
Stylish design
Tracks multiple metrics including HRV, temperature, and activity
Cons
Higher price compared to many other smart rings
Subscription required for full app features
Limited workout and fitness-specific tracking
Overall Grade
C+
Ratings
7.5/10
OVERALL ANALYSIS
The Evie Ring offers a convenient and effective way to monitor your health and wellness with advanced biometric tracking.
With precise sensors measuring heart rate variability, sleep quality, and activity levels, this wearable is designed to support overall well-being and recovery. Its sleek, lightweight design ensures comfortable wear without the bulkiness of traditional fitness trackers.
One of the notable strengths of the Evie Ring is its user-friendly interface combined with powerful insights, making it accessible for both beginners and experienced health enthusiasts. The durable build and long battery life provide reliable performance for daily use, making it a convenient tool to help optimize your lifestyle.
Overall, the Evie Ring is a dependable choice for individuals seeking a high-quality smart ring with comprehensive health tracking in a compact and stylish form.
The only downside is that some advanced features available on competing rings are missing, and a few users find the app less intuitive. Additionally, those looking for detailed workout tracking might find it somewhat limited.
Pros
96.70% Accuracy
Lightweight and comfortable for daily wear
Easy to use
Tracks calories burnt
User-friendly app with essential insights
Cons
Lacks some advanced fitness tracking features
Crashes often
Can't remember data more than 14 days
Occasional syncing issues reported
WHAT IS A SMART RING?
A smart ring is a compact wearable device designed to monitor vital health metrics with precision. Equipped with advanced sensors, it tracks sleep quality, heart rate variability, activity levels, and recovery patterns. Smart rings offer a discreet and convenient way to gain insights into your body’s rhythms, helping to optimize wellness, reduce stress, and improve overall performance—making them a popular tool in modern health and fitness tracking.
Benefits of Smart Ring
- Accurate Sleep Tracking
- Heart Rate & HRV Monitoring.
- All-Day Comfort
- Long Battery Life
- Activity & Movement Tracking
- Data-Driven Insights
- Privacy & Discretion
- Temperature Monitoring
Things To Consider WHEN CHOOSING THE BEST SMART RING
Accuracy of Sensors
Make sure the ring offers reliable tracking for heart rate, sleep, and other health metrics.
Comfort & Fit
Choose a ring that feels lightweight and comfortable for 24/7 wear.
Battery Life & Charging
Look for a ring with long battery life and easy charging options.
App Experience
The companion app should be user-friendly and provide clear, actionable insights.
Data Privacy
Check the brand’s policies on data ownership and security to protect your personal health information.
What To Avoid When Choosing Smart Ring
Unverified Sensor Accuracy
Avoid rings that don’t provide transparent data on how accurate their health tracking is.
Poor Build Quality
Steer clear of rings made from cheap materials that can break easily or cause skin irritation.
Complicated or Buggy Apps
Don’t buy a ring if its app is confusing, frequently crashes, or fails to sync data reliably.
Edward H. - Tehnician Specalist
With over 17 years of experience in creating tech gadgets, Edward knows everything about smart rings. In this review, he helped us test various options to find the most accurate one.