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Just like us, the best fitness trackers come in all shapes and sizes. While some folks prefer smartwatches or gadgets that go around their wrist, others prefer a more discrete, screenless route.
If you fall into the second category, you’ve arrived at the right destination.
Although the Garage Gym Reviews team stands behind top-rated smartwatches like the Apple Watch, Garmin Forerunner 965, and Fitbit Versa 3, we recognize that the best fitness tracker rings offer a less cumbersome way to monitor your heart rate, sleep quality, and other key health and wellness metrics. However, with so many options on the market, choosing the right ring for your finger can feel as overwhelming as trying to master your Bulgarian split squat form.
Luckily, our eclectic squad of product experts has put several popular rings through our proprietary fitness equipment testing methodology to determine what separates the best from the rest. In this Evie Ring vs Oura Ring comparison, I’ll break down everything from their tracking features to their battery life to their performance (based on our fingers-on experience) so you can decide for yourself which ring rules them all.
Evie Ring
Evie Ring
Product Highlights
Pros & Cons
Pros
- HSA/FSA eligible
- Free app and no membership subscription required
- Free sizing kit available
- Made with scratch resistant metal
Cons
- Not compatible with Android devices
- Evie app only available in the United States app store
- Sizes do not match traditional rings sizes
- Shorter battery life than competitors
- Evie app is poorly reviewed by customers
- Customers complain of inaccurate and lost data
Bottom Line
The Evie Ring is a smart health tracking ring aimed at women. It tracks menstrual health, general health, sleep, and activity. The initial price is similar to other ring style trackers and you don’t need to subscribe to a monthly membership in order to maintain access to your data. Customer reviews were poor, customers often found the data inaccurate and complained that the app would lose data, especially the sleep data.
Oura Ring
Oura Ring
Product Highlights
- Measures your heart rate, oxygen saturation levels, and skin temperature
- Over time, it can track your sleep patterns and suggest improvements
- Battery lasts 7 days and can fully charge in 20 minutes
- Can help you find your balance between activity and recovery
- Water resistant up to 100 m
Pros & Cons
Pros
- Long battery life
- Fast charging
- No membership required
Cons
- May develop scratches with daily wear
- Limited statistics without membership
- Comparably expensive
Bottom Line
If you are looking for a fitness tracker that is more subtle and sleek than a traditional wrist tracker, the Oura Ring is a great alternative option.
Evie Ring vs Oura Ring: Comparison Chart
Editor’s Note: Our team tested and reviewed the Oura Ring Generation 3. Oura announced the fourth-generation model on Oct. 15, 2024. We have listed spec options for both.
| Evie Ring | Oura Ring Gen 3 | Oura Ring 4 (Newest) | |
| Price | $269 | $299-$449 depending on finish and style (Heritage or Horizon) | $349-$499 depending on finish |
| Sizes | 5-12 | 6-13 | 4-15 |
| Battery Life | 4 days | 7 days | Up to 8 days |
| Dimensions | 8 mm wide; 3 mm thick | 7.9 mm wide; 2.55 mm thick | 7.9 mm wide; 2.88 mm thick |
| Water Resistant | Up to 1 meter (3 feet) | Up to 100 meters (328 feet) | Up to 100 meters (328 feet) |
| Metrics Tracked | Heart rate, resting heart rate, heart rate variability,skin temperature variation average, respiration rate, blood oxygen (SpO2),step count, active minutes, distance traveled, calories burned, workout tracking | Body temperature, calories burned, sleep, blood oxygen, resting heart rate, and heart rate variability (HRV), breathing rate, respiratory rate, steps and daily movement | Detailed sleep analysis,24/7 heart rate tracking (daytime, nighttime, activity),advanced temperature monitoring,blood oxygen sensing (SpO2), cardiovascular age, cardio capacity (VO2 max), cycle insights,daytime stress, |
| Colors | Silver, Gold, Rose Gold | Silver, Black, Stealth, Gold, Rose Gold, Brushed Titanium | Silver, Black, Brushed Silver, Stealth, Gold, Rose Gold |
| Membership | None required | Oura App; $5.99 per month with first month free | Oura App; $5.99 per month with first month free |
| Warranty | 1 year limited | 1 year | 1 year |
Quick Look: Evie Ring vs Oura Ring
Made by Movano Health, the Evie Ring is a small, lightweight device developed for women and people assigned female at birth. This device offers ovulation estimations, period tracking capabilities, and fertile window estimations. While it also tracks basic health metrics like heart rate, step count, and sleep data, it does not provide in-depth workout metrics. Budget-conscious folks will appreciate that unlike the Oura Ring, there’s no membership fee to use the Evie app.
Unfortunately, that advantage comes at the expense of a shorter battery life (four days vs seven days for the Oura Ring Gen 3), fewer color options (three vs six for Oura), and less water resistance (just 1 meter vs up to 100 meters).
The Oura Ring Gen 3 also comes in two designs, giving you the flexibility to go with the octagon-shaped Heritage model or the more traditional circular Horizon model. The latest model, the Oura Ring 4, has several distinct differences from the previous generation, including recessed interior sensors instead of raised interior sensors, dynamic Smart Sensing technology, and a longer battery life (up to eight days).
Who Should Buy Evie Ring
- Those who want to track their health data without paying for a subscription
- Women and folks assigned female at birth who value menstrual cycle tracking, fertility, and other women’s health metrics
- People who want insight into their sleep stages
Who Should Buy Oura Ring
- Those who want detailed insight into their sleeping habits
- People who swim regularly or need a waterproof tracker
- Folks who want a comfortable ring that fits with any aesthetic
- Fitness enthusiasts who want to integrate workout data from apps like Apple Health or Google Fit
Key Similarities Between Evie Ring and Oura Ring
- Both rings track basic health metrics such as step count, heart rate, heart rate variability (HRV), calories burned, and sleep.
- Both rings track metrics suited for women’s health and menstruating individuals, including cycle tracking.
- Both come with a 1-year warranty.
- Both rings are available in a wide range of sizes to accommodate users with different finger circumferences.
- You can choose from multiple colors for either ring (though Oura offers more choices).
RELATED: Oura Ring Review
Important Differences Between Evie Ring and Oura Ring
- The Evie Ring has a shorter battery life (four days) compared to the Oura Ring Gen 3 (seven days) and the Oura Ring 4 (up to eight days).
- The Evie Ring is slightly thicker than the Oura Ring Gen 3 by 0.45 mm.
- While the Oura Ring has a $5.99 monthly subscription fee to access all your data, the Evie Ring does not have a membership program.
- The Evie Ring is only water-resistant up to 1 meter (3 feet). You can submerge the Oura Ring up to 100 meters (330 feet).
- The Oura Ring Gen 3 comes in two styles, whereas the Evie Ring is only available in one.
- Unlike the Evie Ring, the Oura Ring syncs with your Apple Watch or Google Fit.
- Depending on the color and model, the Oura Ring can cost as much as $499. The Evie Ring is more budget-friendly at $270.
- An extra Evie Ring portable charger costs $79—$20 more than an Oura Ring 4 charger.
RELATED: Evie Ring Review
Tracking Features
Evie Ring
Former GGR Senior Staff Writer and certified personal trainer (CPT) Lauren Strong tested the Evie Ring for six weeks, giving her ample time to try all its tracking features. In her words, it’s “fairly rudimentary when it comes to fitness tracking.”
Don’t expect to glean much insight into your workouts, especially since the Evie Ring doesn’t have automatic workout detection. There’s also no way to select an exercise mode, another factor that limits its functionality for fitness tracking.
Luckily, the Evie Ring redeems itself with solid sleep and cycle tracking. During her testing period, Lauren awoke each morning to a graph of her sleep cycles with how many minutes were spent in REM, light, and deep sleep. However, she was disappointed that the “sleep vitals” data are only presented as averages, preventing you from getting nightly insight into your body temperature or heart rate.
RELATED: Best Heart Rate Monitors
Lauren found the Evie app more robust than Apple Health for cycle tracking because “you can log your energy levels, mood, and vaginal discharge all month long. And then during your period, you can log your flow and other symptoms like spotting and cramping.”
Still, the lack of skin temperature tracking alongside your other cycle data left her wanting more from a ring designed for women’s health.
Oura Ring
Coop put a ring on it (again) for the sake of finding out just how effective the Oura Ring Gen 3 is for fitness tracking. Designed to track walking, cycling, or running, the ring allows you to log activities in the Oura app, which shows metrics such as total caloric burn, workout heart rate, pace, and more. The Gen 3 also provides a Readiness Score, which takes your body’s temperature, heart rate, and sleep into consideration to show how prepared you are to work out—another reason it’s one of the best smart rings on the market.
The Oura Ring also provides Activity and Sleep Scores. Senior Staff Writer and Olympian weightlifter Caine Wilkes found the second feature quite helpful while he used the Oura Ring for 10 months leading up to the Tokyo Games.
“Being able to see my rest and recovery was very helpful in planning out my workout and adjusting it if I wasn’t quite as recovered as I was expecting.”
RELATED: Best Muscle Recovery Tools
The Oura Ring 4 takes things to the next level, as long as you pay for the $5.99 monthly membership. That gives you full access to the following health tracking features, many of which use different algorithms to analyze your sleep and activity data:
- Detailed sleep analysis
- 24/7 heart rate tracking (daytime, nighttime, activity)
- Integration with third-party health and wellness apps like Strava
- Advanced temperature sensor monitoring
- Blood oxygen sensing (SpO2)
- Cardiovascular age
- Cardio capacity (VO2 max)
- Cycle insights
- Daytime stress
- Dynamic activity goals with automatic activity detection
- Oura Labs
- Pregnancy insights
- Resilience
- Weekly, monthly, quarterly, yearly, and anniversary reports
RELATED: Best Budget Fitness Tracker
Construction and Design
Evie Ring
Lauren isn’t shy when she says “the best thing about the Evie Ring is the way it looks.” Scoring the ring 5 out of 5 stars for general wear, she loves how the gold option matches her other gold jewelry and doesn’t look out of place at a formal event, either.
Built with scratch-resistant Liquidmetal®, the Evie Ring comes in three colors: silver, gold, or rose gold. It’s available in sizes ranging from 5 to 12. The company recommends ordering the free sizing kit, which Lauren used to ensure she got the right fit.
Oura Ring
The Oura Ring Gen 3 comes in two designs: the Heritage (octagon-like) and Horizon (circular). The Horizon comes in six color options, with the design and colorway impacting the final price. The Gen 3 is available in sizes 6 to 13, and Oura has resources on its website to help with sizing.
Similar to the Evie Ring, the Oura Ring blends seamlessly with other jewelry and attire. In addition, its lightweight design left Coop forgetting he even had it on. Ditto for former Performance Editor Anthony O’Reilly’s partner, Morgan, another Oura Ring user. This led to a perfect score of 5 out of 5 stars for ergonomics and comfort from our team.
Caine, however, did have one callout about the design that deserves mention:
“I’m a big guy who lifts weights, so when I sized my fingers, the only finger I could fit an Oura Ring on was my pinky finger. I’d love to see them expand their sizes for larger athletes.”
RELATED: GGR’s Guide to Gym Accessibility
Featuring a seamless titanium interior and a non-allergenic titanium on both the inner and outer ring surfaces, the Oura Ring 4 has discreet sensors and a slightly sleeker design. It also features the most updated sensors, including an accelerometer that provides 24/7 movement and activity tracking. Here’s a complete breakdown of what’s inside:
- Red and infrared LEDs measure blood oxygen levels while you sleep.
- Green and infrared LEDs alternate to measure heart rate and heart rate variability 24/7 and respiration rate during your sleep.
- A digital sensor measures your temperature variations.
- An accelerometer tracks movement and activity 24/7.
RELATED: Fitness Tracker Metrics
Battery Life and Connectivity
Evie Ring
The Evie Ring comes with a portable charging case that holds up to 10 ring charges. Lauren confirms the company accurately lists that the Evie Ring can last for four days on a single charge with continuous use and logging one workout per day.
In her experience, it only took about an hour to get a full charge from about 25% battery. She scored the battery life 4.5 out of 5 stars.
Unfortunately for Android users, the Evie Ring is only compatible with iOS 16 and higher (the iPhone 8 or newer). If you’re on #TeamAndroid, you may want to look into something like RingConn or the Samsung Galaxy Ring. In addition, the ring only syncs with the Evie App, which led Lauren to give it just 3 out of 5 stars for connectivity.
RELATED: Samsung Ring vs Oura
Oura Ring
In his review of the Oura Ring Gen 3, Anthony noted that Coop’s (GGR’s founder) and several long-time Oura users’ favorite feature is the quick charge and long battery life. It can hold a full charge for up to a week. Plus, it only takes 20 to 80 minutes to recharge. Overall, the Gen 3 received a perfect score for battery life.
Similarly, the Oura Ring 4 typically charges in 20 to 80 minutes, depending on the battery level. However, it has a slightly longer battery life of up to eight days.
What separates Oura from Evie is connectivity. While you can use the Oura Ring app, you can also sync your data with Apple Health. It’s also compatible with Android devices. Collectively, the GGR team gave the Gen 3 a 4.5-out-of-5 rating for tech capabilities.
RELATED: Ultrahuman Ring AIR Review
Customer Reviews
Evie Ring
There are no customer reviews for the Evie Ring on the company website. The only available feedback is on TrustPilot, where the ring has garnered a disappointing score of 2.3 stars based on eight reviews.
“Support is virtually nonexistent/useless,” a verified user named Felipe wrote in his 1-star review.
Another verified user named Melissa offered more insight into her less-than-stellar Evie Ring experience.
“I like the design and the basic features like step counting, heart rate, temperature change and sleep tracking. However it doesn’t track naps, doesn’t detect workout (you have to tell it you’re going to workout with a specific time frame) activity well, has only a few days of battery life and doesn’t give any insights to the data it provides. The user manual is only available online and it is not comprehensive enough. Feels like they rushed this ring to market and cut a lot of corners, most importantly customer service and satisfaction.”
Oura Ring
On the other hand, the Oura Ring Gen3 has earned an impressive rating of 4.3 stars based on 2,501 Amazon reviews. Customers appreciate the user-friendly app, sleek design, and effective tracking technology.
“I’ve had the Oura ring for a month now and I love it so much! I had wanted this ring since it first came out but could never afford it. Now that you can use your FSA/HSA, it is possible. Since I used mine, I went with my favorite color: rose gold,” a customer named Griselda Cordero wrote in her 5-star review. “I have trouble tossing and turning all night and this ring picks up on my sleep cycles. It will give suggestions of when you should go to sleep to get a better night’s rest.”
Company Policies
Just like the Movano Evie Ring, the Oura Ring has a disappointing warranty of only 1 year from the date of purchase that covers defects in materials and workmanship. In other words: Take care of your ring since normal wear and tear aren’t covered.
Both manufacturers offer a 30-day window for exchanges or returns. However, Movano requires you to conduct all returns and exchanges through a third-party service called Loop Returns. Lauren found it troubling that there’s no company phone number or business hours listed, resulting in a customer experience score of only 2.5 out of 5 stars.
Evie Ring vs Oura Ring: Final Thoughts
In the battle between Evie vs Oura, the winning ring earned a significantly higher score of 4.2 compared to 3.5 for a multitude of reasons. While the Evie Ring looks attractive and has a solid battery life, it lacks connectivity options, is not particularly user-friendly, and falls short in tracking certain metrics.
Meanwhile, the Oura Ring offers excellent construction and durability, an unbeatable battery life, excellent tech capabilities, and incomparable water resistance (100 meters vs 1 meter). It may not present as much value due to the higher price tag (especially if you pick certain finishes), but rest assured you’ll get more out of having an Oura around your finger than an Evie.
FAQs
How accurate is the Evie Ring?
Unfortunately, many customer reviews cited data inaccuracies, complaining that the app would lose data frequently. Our product tester noted that the lack of auto-detection with fitness tracking can result in accurate measurements.
Does the Evie Ring track steps?
Yes, the Evie Ring tracks your daily step count.
Which is better for sleep tracking: Evie Ring or Oura Ring?
While the Evie Ring provides insight into your sleep, the Oura Ring offers superior tracking capabilities. In fact, a 2020 study1 found that the Oura Ring was on par with medical-grade sleep trackers in tracking total sleep time and sleep efficiency.
Should I buy a smart ring or smartwatch?
A smart ring is a great option if you want to minimize distractions while gaining insight into your health and wellness data. On the other hand, a smartwatch like the Apple Watch Ultra 2 offers more functionality, including real-time notifications, text messaging, and phone calls. Plus, smartwatches are better suited for strength training workouts, as trying to lift weights with a ring on can be uncomfortable.
References
- Asgari Mehrabadi M, Azimi I, Sarhaddi F, Axelin A, Niela-Vilén H, Myllyntausta S, Stenholm S, Dutt N, Liljeberg P, Rahmani AM. Sleep Tracking of a Commercially Available Smart Ring and Smartwatch Against Medical-Grade Actigraphy in Everyday Settings: Instrument Validation Study. JMIR Mhealth Uhealth. 2020 Nov 2;8(10):e20465. doi: 10.2196/20465. PMID: 33038869; PMCID: PMC7669442.
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