Evie Ring Review | Why It’s Not Worth Your Money—Yet!

When a brand-new device is covered by CNET at CES, you have to pay due attention to it. Evie ring apparently “shined” well at the start of the year, but I don’t think I am impressed by it. The beautiful design is difficult to ignore; it does look pretty, but looks aren’t everything, and that’s never been truer.

Wearing the ring for almost 3 months now, I can say there are definitely better options than it in the market. But first, let me tell you whether it’s worth spending your money on.

Is Evie Ring Worth Buying?

I have used Oura Ring Gen3 for a long time, but this device is not focused on Women’s health, atleast as much as I had expected. While Evie Ring tracks all the necessary metrics, it doesn’t use them in the best way possible. What’s the point of even tracking all metrics if you cannot tell me about it?

Considering that Evie has only been launched in January and is the device’s first version, I will give it a break. It is a good attempt, but I don’t think it is worth $269 as of now. Here’s the complete breakdown of my review:

What I Like	What I Don’t Like
Open cut design	iOS only (iOS v16 or above)
Easy interface of the app	Questionable data accuracy
Portable charging case	Poor workout tracking
AI-enabled features	Doesn’t sync with Apple Health
Affordable, no subscription required	Available in the US only (Currently out of stock)
Tracks all important metrics	Missing Women’s Health Features

Design & Sizing

The Evie Ring comes with a unique open-ring model that caught my attention first at CES 2023. This design is ideal for women as our body goes through changes at different times of the month. However, the small notch in the ring sometimes caught in my hair (yes, that’s a drawback, I have to admit but I will let it go).

Apart from the unique design, the Evie Ring is made of Liquidmetal with a shiny titanium PVD coating. It’s available in three colors – Silver (my favorite), Gold, and Rose Gold. You can find 8 sizes from size 5 to size 12. You do get a free sizer from the website.

I have to say the fit of the ring is better than that of Oura or Ultrahuman. That’s because of the open cut; I know when my fingers will swell, which they definitely will; the open cut does actually help. It’s not just for the show.

With a round, uncut ring, my finger gets swollen and the fit of Oura gets so tight that it becomes uncomfortable, but that has never happened once with me while wearing Evie ring.

A Health Tracker

Evie ring tracks most of the important health metrics with its sensors-

• Red and Green LEDs
• Infrared PPG sensors
• Skin temperature sensors
• Photodiodes
• 3D accelerometer

At a glance, you know it is the same as the Oura Ring. But, when I checked the data for a week, I was a little bit disappointed. Women’s health primarily focused on sleep tracking and menstrual cycle tracking. What I found is that the sleep tracking data by the Evie Ring deviates from my Oura Ring and Apple Watch (sometimes it’s a few minutes, sometimes more).

As for the menstrual cycle, the Evie App is good at tracking period prediction and ovulation prediction. But it’s not what was promised, there is more to it.

Heart Rate and Resting Heart Rate

Evie Ring tracks heart rate (HR) 24/7 passively. So far, this smart ring tracks heart rate (HR) every 5 minutes when the user is awake or sleeping. I found it also tracks HR every minute when a user is logged into Workout Mode.

In Spot Check mode, Evie Ring tracks HR for 40 seconds to give real-time HR readings. Although Evie Ring claims in one of their blogs that their algorithm can accurately track HR using PPG and 3D accelerometer data, I noticed that HR during workouts is not as accurate as my Apple Watch.

I can’t find my past RHR data on the Evie app. I got my RHR score from the night before, but it was erased. There is no way to find “trends” for HR or HRV data. To me reading these metrics each day is useless, since I can’t follow the trends.

As I said, what’s the point of collecting data when you can’t show it to me?

Heart Rate Variability

Evie Ring also tracks HRV. I found that Evie Ring’s HRV data fluctuates, just like HR and RHR. That made me question whether I was wearing the Evie Ring appropriately. I was, yet the result was not satisfactory.

If tracked with proper accuracy, HR and HRV data can give valuable insights into a person’s present recovery stage. How well your body is recovering or how much rest you need can all be analysed from HR and HRV data. But so far I haven’t seen any such suggestions from the Evie companion app.

Skin Temperature Variation Average

Tracking skin temperature plays a key role in monitoring menstrual health. Evie Ring comes with skin temperature sensors and claims to accurately track the average skin temperature variation. However, the Evie ring only tracks skin temperature when you are asleep, never otherwise.

It was a bit disappointing to learn that Evie doesn’t use skin temperature to give ovulation, fertile and infertile days. That’s because skin temperature is a key metric that can accurately detect ovulation, just like Oura does it with Natural Cycles. Evie being a “women-centric” ring and not implementing basic women-centric features was a big turn-off for me.

Respiration Rate

Evie Ring tracks respiration rate throughout the night. Apparently, Evie Ring monitors sleeping respiration rate along with sleep patterns and time spent in each sleep stage. My respiration rate is usually high because of poor sleep and high anxiety.

But no matter whether Evie Ring is accurate in tracking my RR or not, the data is deleted in 24 hours! I can’t even find Respiration Rate trends on the app.

Blood Oxygen (SpO2)

I checked that the Evie Ring tracks the blood oxygen (SpO2) level pretty accurately. The data closely tailed my Oura Ring data. Besides, I found that Evie Ring’s error in accuracy for tracking SpO2 level was well below the FDA guidance (3.5%). In other words, SpO2 data collected by the Evie Ring is as good as the commercially available medical-grade pulse oximeters.

While FDA clearance would mean the device can be used clinically, for now, the ring only tracks SpO2 at night or when you are sleeping. However, there’s a feature to Spot Check SpO2 any time during the day as well.

Menstrual Health Tracking

Evie Ring is focused on women’s health. Naturally, when it comes to menstrual health tracking, my expectations from Evie Ring were significantly high. But what I found was not worth it.

First of all, Evie Ring does not use the skin temperature variation data to predict the ovulation period. Secondly, Evie Ring tracks the menstrual cycle and predicts the ovulation period based on the data of the previous cycle that the user manually logs in.

What Evie Ring is promoting is the difference between the different health metrics scores (Sleep score, SpO2 level, and HRV) during the menstrual cycle and other times of the month. Users can manually log in their mood, even during their cycle. My point is, if everything the user is doing, what will the ring do?

Sleep Quality

Initially when I started using Evie three months ago, its sleep tracking was terrible. It missed nights of data altogether or sometimes didn’t even track it. I had major second doubts about the ring at that time. After all, Sleep tracking is the one thing smart rings are popular for.

Lucky for me, the issue resolved itself after a few weeks, and now I rarely get any errors with my data on the app. I also noticed that the app struggles to sync multiple nights of data at once. So, what I do now is, every morning after I wake up, I sync the ring with the Evie app.  And I do think it helps with removing this error.

Also, Evie Ring neither tracks “naps” nor lets users manually enter them. This is disappointing to me as I cannot measure my daytime short naps using the Evie Ring.

Activity Tracking

Bad! Evie is very bad at activity tracking there’s no automatic activity detection feature. Even if I manually add a workout there aren’t many options to choose from. It’s just too much effort and almost no gain. I cannot mention whether I was swimming, running, cycling, dancing, doing yoga, or anything else. It is such a bummer!

Also, I noticed that my step counts do not match those of my Apple Watch or Oura Ring. My Evie Ring’s step counts are always 10% higher than those of my Apple Watch. However, I know that most smart rings are not good at tracking step counts. They are mostly reliable for tracking sleep and HR, not activities.

My expectations weren’t even that high with Evie, but it really lost its chances to be a real competitor when there’s practically no real feature of workouts.

Evie App

The Evie app is free to download and use. In simple words, I do not need to spend any extra money for the app subscription. It’s a relief since I’m already bearing the subscription cost for my Oura Ring app.

The Evie app is simple, fresh, and playful. The app also emphasizes the holistic health approach. Instead of a bunch of overlapped graphs, the main tab shows a stylish single ring representing daily health factors. It is refreshing to check at a glance how sleep, active minutes, calories burned, and steps are playing a part in your overall health.

You can choose the top three goals that you want to chase. It helps to choose the main health parameters that you really need to focus on. There are tabs for Today, My Body, Sleep, and Journal. In each tab you can see a different page catering to each of these things.

What I didn’t like about the app was it doesn’t save any data. There’s no option to see how well I slept a month ago on a particular night. So, I lose the analysis that I so easily could have done about my health.

The Evie app doesn’t sync with Apple Health or Natural Cycles, or any other app for that matter. While each tab of the app will give me details about my Sleep stages, RR, HRV, HR, SpO2 and skin temperature, the Evie app doesn’t defines my baseline for these metrics.

For instance, Oura takes its time to decide what’s my baseline temperature and then it will tell me in comparison to that baseline temperature, how much my temperature is elevated. Which is super helpful as my baseline might be different from others.

Evie loses the essence of being a health tracker when it doesn’t processes the data in the right way, when it collected all the data almost accurately.

Commendable Battery Health And Convenient Charging

The Evie Ring is officially promoting the smart ring as having 4+ days of battery life. However, when I used the ring, it was only 3 days on average (using all the features). It’s a bit disappointing. But, the portable charger battery offers 10+ full ring charges, which is a great compensation.

The Evie Ring charging case looks like the Airpod case, almost the same size as well. When I checked the app, the Evie Ring battery health is visible, but there is no way to know how many charges are left in the charging case.

I used the USB-C cable to charge the Evie Ring charger, which took almost 90 minutes to charge fully (as promised by Evie). Hence, to me, the Evie Ring’s battery health is not as good as my Oura Ring, but with a portable charger, it’s in fair competition.

Specifications 

Specifications	Details
Design	Liquidmetal, Titanium PVD coating
Weight	3.2g – 3.7g
Width	8mm
Thickness	3mm
Battery Life	4+ days (practically 3 days)
Charging Time	~ 90 minutes
Portable Charger Battery	10+ full ring charges
Sensors	Red and Green LEDs, Infrared PPG sensors, Skin Temperature Sensors, Photodiodes, 3D Accelerometer
Sleep Tracking	Sleep Duration, Sleep Stages, Overnight Vitals (With a Holistic Approach)
Activity Tracking	Step Count, Active Minutes, Distance Traveled, Calories Burned, Workout Tracking (Needs Improvement)
Health Metrics	Heart Rate, Resting Heart Rate, Heart Rate Variability, Skin Temperature Variation Average, Respiration Rate, Blood Oxygen (SpO2)
Menstrual Health	Period Prediction, Ovulation Prediction, Mood & Symptom Tracking
Water-Resistance	1M
App Compatibility	iOS v16 or above
Price	$269
Availability	US

Price and Availability

Evie ring is available at a price of $269, but do not think it is worth your money right now. With bad processing and management of data, any price will be too much to ask for.

Evie Ring is currently shipping only to US regions. So, if you are from a different country and looking forward to trying this unique health-tracking device, I have to disappoint you.

You may have to wait a little longer as Movano Health did not publish any agenda for rolling out the Evie Ring worldwide. Besides, it’s even out of stock in the US market now.

WearableXP’s Verdict

Evie ring is not worth your money right now. I know the ring might seem cheaper or more affordable when compared to Oura or Ultrahuman, and I am not saying it’s not tracking the right metrics, it is.

The app is also fun and colorful to look at which is very fresh to use. There are certain basic features that the Companion app just cannot compromise upon. Such as data from previous weeks and months, using skin temperature for cycle tracking, nap tracking, and simply better data analysis.

Evie didn’t meet the bare minimum requirements so it is definitely not my recommendation right now. But, I see Evie actively working on improving itself and I am very hopeful all its shortcomings will be resolved in the future soon.

Frequently Asked Questions