ULTRAHUMAN Ring AIR-Smart Ring Health Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Made in India, Bionic Gold, 6)

ULTRAHUMAN Ring AIR-Smart Ring Health Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Made in India, Bionic Gold, 6)

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ULTRAHUMAN Ring AIR-Smart Ring Health Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Made in India, Bionic Gold, 6)
Price: $349.00
(as of Sep 19,2025 03:07:02 UTC – Details)

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To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.Learn more how customers reviews work on Amazon







Customers say

Customers find the smart ring to be better than any smartwatch and appreciate its accurate sizing kit with multiple options. The device tracks sleep and activity accurately, and customers consider it a worthwhile investment. However, the battery life and functionality receive mixed reviews – while some report full charge lasting about 3 days, others say it drains quickly, and while some say it does everything, others find it completely useless. Moreover, connectivity issues are significant, with customers reporting the ring stops connecting with the app and won't pair with iPhones. Value for money opinions are divided, with some finding it worth the price while others say it's not worth the money.

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Sleep trackingQualityTrackabilitySizing accuracyBattery lifeFunctionalityValue for moneyConnectivity
166 customers mention "Sleep tracking"144 positive22 negative

Customers appreciate the ring's sleep tracking capabilities, noting its thorough monitoring of both sleep and activity levels.

"…Extremely detailed health data: It tracks heart rate, HRV, sleep, recovery, and more—and explains each metric clearly…." Read more
"…I love all the features in the app especially the sleep tracking, vitamin D tracking, and stress tracking…." Read more
"…like an Apple Watch to track my movement, heart rate, temperature, sleep quality, and makes it easy to understand my numbers and now I can improve…" Read more
"…sleep beautifully and has helped me pick apart some ways to improve my sleep quality already and I’m only two weeks into wearing!…" Read more
160 customers mention "Quality"135 positive25 negative

Customers find the smart ring to be better than any smartwatch, with one customer describing it as a great piece of hardware.

"Great ring and UI for anyone that likes a more detailed approach than Oura ring for example, and that doesn't charge a subscription either…." Read more
"Great product! Love how thorough it is for sleeping and activity especially while being pregnant…." Read more
"Love this ring!!! I have tried several others the Ultrahuman is the most comfortable of them all…." Read more
"Good product." Read more
158 customers mention "Trackability"127 positive31 negative

Customers appreciate the ring's tracking capabilities, noting it accurately monitors sleep, activity, and menstrual cycles, with one customer mentioning its ability to track caffeine intake.

"LOVE IT!! It tracks everything!! I love how consistent everything is and how detailed everything is!…" Read more
"…Extremely detailed health data: It tracks heart rate, HRV, sleep, recovery, and more—and explains each metric clearly…." Read more
"…first impressions I was quite happy with the sleep, steps, workout tracking, etc…." Read more
"…My favorite features are definitely the cycle tracking and step tracking, they make it so easy to stay mindful of my body and movement throughout…" Read more
131 customers mention "Sizing accuracy"95 positive36 negative

Customers appreciate the ring's sizing accuracy, noting that it comes with all different sizes and is fairly simple to use, with one customer mentioning they can wear different sizes overnight.

"…I also liked that fact that they offer a sizing kit to help you find exactly the right size…." Read more
"…The ring has various sizes and colors…." Read more
"…on the finger itself and too small round your knuckles.there are no half sizes so if you have that problem for your fingers than you’ll have to size…" Read more
"…-Sizing is fairly simple, just need to make sure the size works for the finger you plan on using it on…." Read more
252 customers mention "Battery life"110 positive142 negative

Customers have mixed experiences with the ring's battery life, with some finding it great while others report rapid depletion each day and need to recharge it every 2-3 days.

"…The one major problem with the ring is the battery life. Was advertised to last an entire week…." Read more
"…Battery life is great. I charge it for like an hour every 4 days…." Read more
"…I expected a lot more for the price, and with poor battery life and terrible customer service, I wouldn't recommend the Ultra Human Ring to anyone." Read more
"…It charges quickly, and needs recharged about every 4 days (it keeps collecting data even in low battery mode and then syncs to the app once charged)…" Read more
198 customers mention "Functionality"97 positive101 negative

Customers have mixed experiences with the ring's functionality, with some finding it amazing and extremely useful, while others report that it stopped working.

"Stopped working (wouldn’t charge and wouldn’t connect) after only two weeks of using…." Read more
"Works well and provides a lot of interesting data, especially around sleep and general daily activity…." Read more
"Product not a month old and stopped working" Read more
"Works great" Read more
136 customers mention "Value for money"86 positive50 negative

Customers have mixed opinions about the smart ring's value for money, with some finding it worth the price, particularly noting the beautiful sizing kit at practically giveaway price, while others feel it's not worth the investment.

"…Definitely worth it if you’re serious about tracking your health and performance!" Read more
"…Does not track steps accurately. Waste of money. going back to iwatch. :…" Read more
"Worth it!!!!…" Read more
"Great value with no subscription…" Read more
139 customers mention "Connectivity"24 positive115 negative

Customers report significant connectivity issues with the smart ring, noting that it frequently disconnects from the app and iPhone.

"…been about a month with ring number 3 and suddenly yesterday, it stopped connecting and the app keeps trying to connect to my husband’s ring…." Read more
"…than 8-10 hours, started missing windows of data and then stopped connecting altogether…." Read more
"…also randomly died after two and a half months it literally would not connect to the app and I could not troubleshoot it…." Read more
"…My ring stopped connecting to the app and it couldn't be fixed. I thought customer service was very helpful when I tried to troubleshoot…." Read more





Awesome insights for body and health!

5 out of 5 stars

Awesome insights for body and health!
I invested in this product knowing this was a young company. I am excited to see what all they develop as they go with this product. People I know had already purchased from l 2 different competing companies so my husband and I decided to try this one. The ring has various sizes and colors. The titanium definitely gets scratches but they are subtle and it was also expected considering other’s experiences even with rings from other companies. My husband has the matte grey and it doesn’t seem to have a scratch yet. I also highly recommend the ring sizer first! The ring is waterproof which is cool for various activities. Personally I don’t care to wear it in the shower or to wash my hands but in the pool yes. I have to charge about every 5 days which is better than my watch. May not be as good as some other brands but I don’t have to pay a subscription for my insights. So if I have to take 1 hour out of my week to charge my ring so be it. It doesn’t take long to charge. It’s better than every night like my watch which I wear in conjunction with the ring. Also more comfortable to wear at night. I don’t notice it at night like I have my watch when I’ve fallen asleep with it. I appreciate the functionality. The insights and the fact it works with apple health and other apps like fatsecret. The AFib detection is still pending in the US which sucks and there will be a small monthly fee for the use of that feature once it becomes available but you don’t have to have it. It has several power plugs that can be used such as menstrual cycle, caffeine window, circadian rhythm, and some others that are free. It seems fairly accurate from what I can tell, such as the heart rate. The step counter not so much but I use my watch for that. Also the more I wear it the more it learns about me and the better the insights become. I’ve attached several pictures and each power plug you can click on and most of them go more in depth but I just left it to the simple stuff for this review. I hope this helps. As I have mentioned, my husband also has an ULTRAHUMAN ring so we were able to connect using our ULTRAHUMAN APP using zones and keep each other in check. I named mine I Don’t Know because I literally didn’t know what I was getting into at the time. But it makes it more competitive.
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Top reviews from the United States



  • Naomi A

    5.0 out of 5 stars

    Love my ring

    Reviewed in the United States on July 22, 2025

    Verified Purchase

    I’m in love with my Ultrahuman ring The app gives insight on my sleep pattern. It tracks my temperature while I sleep and how this disrupts my sleep. The app was easy to setup. The color is nice. The material is well made. I ordered ring covers to protect it from scratches or wear and tear due to my busy life. I ordered the sizing kit and it was very helpful. I can wear it on my index or middle finger. My fingers do swell at night, so I can wear it on either finger. All in all, great ring, app has a lot of informative information about your health. And you can purchase helpful add ons for a low cost. There’s free add ons too.

    5 people found this helpful

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  • Heather D.

    5.0 out of 5 stars

    Awesome insights for body and health!

    Reviewed in the United States on July 31, 2025

    Verified Purchase

    I invested in this product knowing this was a young company. I am excited to see what all they develop as they go with this product. People I know had already purchased from l 2 different competing companies so my husband and I decided to try this one. The ring has various sizes and colors. The titanium definitely gets scratches but they are subtle and it was also expected considering other’s experiences even with rings from other companies. My husband has the matte grey and it doesn’t seem to have a scratch yet. I also highly recommend the ring sizer first! The ring is waterproof which is cool for various activities. Personally I don’t care to wear it in the shower or to wash my hands but in the pool yes. I have to charge about every 5 days which is better than my watch. May not be as good as some other brands but I don’t have to pay a subscription for my insights. So if I have to take 1 hour out of my week to charge my ring so be it. It doesn’t take long to charge. It’s better than every night like my watch which I wear in conjunction with the ring. Also more comfortable to wear at night. I don’t notice it at night like I have my watch when I’ve fallen asleep with it.
    I appreciate the functionality. The insights and the fact it works with apple health and other apps like fatsecret. The AFib detection is still pending in the US which sucks and there will be a small monthly fee for the use of that feature once it becomes available but you don’t have to have it. It has several power plugs that can be used such as menstrual cycle, caffeine window, circadian rhythm, and some others that are free. It seems fairly accurate from what I can tell, such as the heart rate. The step counter not so much but I use my watch for that. Also the more I wear it the more it learns about me and the better the insights become. I’ve attached several pictures and each power plug you can click on and most of them go more in depth but I just left it to the simple stuff for this review. I hope this helps. As I have mentioned, my husband also has an ULTRAHUMAN ring so we were able to connect using our ULTRAHUMAN APP using zones and keep each other in check. I named mine I Don’t Know because I literally didn’t know what I was getting into at the time. But it makes it more competitive.

    Customer image


    Heather D.

    5.0 out of 5 stars

    Awesome insights for body and health!

    Reviewed in the United States on July 31, 2025


    I invested in this product knowing this was a young company. I am excited to see what all they develop as they go with this product. People I know had already purchased from l 2 different competing companies so my husband and I decided to try this one. The ring has various sizes and colors. The titanium definitely gets scratches but they are subtle and it was also expected considering other’s experiences even with rings from other companies. My husband has the matte grey and it doesn’t seem to have a scratch yet. I also highly recommend the ring sizer first! The ring is waterproof which is cool for various activities. Personally I don’t care to wear it in the shower or to wash my hands but in the pool yes. I have to charge about every 5 days which is better than my watch. May not be as good as some other brands but I don’t have to pay a subscription for my insights. So if I have to take 1 hour out of my week to charge my ring so be it. It doesn’t take long to charge. It’s better than every night like my watch which I wear in conjunction with the ring. Also more comfortable to wear at night. I don’t notice it at night like I have my watch when I’ve fallen asleep with it.
    I appreciate the functionality. The insights and the fact it works with apple health and other apps like fatsecret. The AFib detection is still pending in the US which sucks and there will be a small monthly fee for the use of that feature once it becomes available but you don’t have to have it. It has several power plugs that can be used such as menstrual cycle, caffeine window, circadian rhythm, and some others that are free. It seems fairly accurate from what I can tell, such as the heart rate. The step counter not so much but I use my watch for that. Also the more I wear it the more it learns about me and the better the insights become. I’ve attached several pictures and each power plug you can click on and most of them go more in depth but I just left it to the simple stuff for this review. I hope this helps. As I have mentioned, my husband also has an ULTRAHUMAN ring so we were able to connect using our ULTRAHUMAN APP using zones and keep each other in check. I named mine I Don’t Know because I literally didn’t know what I was getting into at the time. But it makes it more competitive.

    Images in this review

    Customer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer image

    2 people found this helpful

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  • loved this item!

    3.0 out of 5 stars

    Great for tracking anything but a workout

    Reviewed in the United States on June 8, 2025

    Size: 9Style: Made in IndiaColor: Bionic GoldVerified Purchase

    I’ve had this ring for 4 months now. I bought it to replace my apple watch. I would charge my apple watch every night and not get any of the sleep insights, so I thought this would be nice for that.

    Battery: if you workout regularly you’ll need to charge this almost daily. I charge it anytime I take a shower, and if I’m going to be sitting down for an extended period of time. It recommends to charge in short spurts instead of leaving it on the charger for hours. It charges relatively fast in my opinion.

    Workouts: the app has so many workout options, much more than apple’s fitness app. i wish i could love the workout mode BUT my heart rate is almost always wrong. The app will read 100-110 while my machine is estimating 160-170. I know my body and know that my heart rate on the stairclimber is much higher than 105. Also my workouts will randomly stop recording with no record of it running to begin with and I lose all that data. Yesterday 2/4 of my workouts didn’t record when I could see it recording the time at the top of my screen. I would open the app to end the workout and the app would be out of the workout mode and display my home screen. My workouts were roughly 30-40 minutes each. Much less than their 2 hour cut off that the support mentioned. My ring also is disconnected from the app almost every time I pull up the app during a workout, which means it’s not registering anything. I reached out to support on the app but they were unhelpful. They only said “the ring is connected now” (which I knew at the time. I was trying to raise concern during workouts). And then dismissed all my other grievances without any help.

    Sleep/Recovery: This ring tracks sleep really well from what I can tell. Sometimes I have to alter the start of my sleep because I’ll be on my phone and it thinks I already fell asleep. There will be times I’m sick and have a fever through the night and the app detects my body temperature change and tells me to take it easy the next day.

    Cycle Tracking: I do not have a regular cycle to track. I believe it needs 15 days to be able to accurately detect a cycle. My birth control makes my cycle nonexistent or sporadic.

    I WOULD NOT recommend this ring for any type of workout logging. I am switching back to my apple watch for workouts.

    I WOULD recommend this ring for sleep track, recovery tracking, etc.

    I recommend using the ring sizer to get an accurate fit before purchasing. I purchased the gold color and would advising not wearing it for any activity using your hands. The gold scratches very easily and will start to rub off the ring.

    32 people found this helpful

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  • Jonathan E.

    4.0 out of 5 stars

    Good value overall

    Reviewed in the United States on February 27, 2025

    Size: 9Style: Made in IndiaColor: Aster BlackVerified Purchase

    Overall this smart ring is pretty good. It’s pretty accurate in terms of the metrics it collects about my health. I especially like the sleep tracking functionality

    The design is very sleek. Doesn’t look like you’re wearing an expensive piece of machinery which is nice in my opinion. The ring is lightweight and doesn’t feel heavy to wear. After a few days of consistent use, you forget that you’re wearing it.

    The charging speed is okay, can usually get back up to full charge within a few hours. Another big benefit of the Ultrahuman ring is that the app is free and you don’t have to pay a monthly subscription like some of the other smart rings on the market. Another huge benefit for me is that the ring is HSA eligible so I didn’t pay anything out of pocket to buy this.

    The one major problem with the ring is the battery life. Was advertised to last an entire week. For the first couple weeks of wearing I did get to about a week of battery life before having to charge it again. Now after a few months of wearing it I usually get a maximum of about 4 days before I need to charge it again.

    8 people found this helpful

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Top reviews from other countries

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  • Vincent
    5.0 out of 5 stars

    Goed maar achteraf nutteloos

    Reviewed in Belgium on July 3, 2024

    Verified Purchase

    Goed maar na passen nutteloos



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  • Anilu
    5.0 out of 5 stars

    Super util

    Reviewed in Mexico on September 15, 2025

    Size: Sizing KitStyle: Made in IndiaColor: Sizing KitVerified Purchase

    Llegó a tiempo. Muy recomendado el kit si quieres comprar tu anillo sin estar adivinando la talla



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  • Linda
    5.0 out of 5 stars

    Accurate sizing

    Reviewed in the United Kingdom on June 7, 2024

    Verified Purchase

    I bought it to size my finger for the smart ring, and the size was accurate. Also, you get to wear it to test the original ring.



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  • S. Hale
    4.0 out of 5 stars

    Good sizing kit for the Ultrahuman Ring

    Reviewed in Canada on March 10, 2024

    Verified Purchase

    Accurate sizing kit, but a little sharp around the edges. Uncomfortable when testing overnight.



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  • Deep Singh
    5.0 out of 5 stars

    Good Product

    Reviewed in India on August 26, 2024

    Verified Purchase

    Good Product



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Product Summary: ULTRAHUMAN Ring AIR-Smart Ring Health Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Made in India, Bionic Gold, 6)

From ULTRAHUMAN
BUY THE SIZING KIT FIRST: Ultrahuman Ring sizes differ from standard ring sizes. Purchase the Ultrahuman Sizing Kit first, which includes a ring sizer, to accurately determine your size. The Ring AIR is available in 10 sizes (5-14), ensuring a comfortable, secure fit. Using the sizing kit helps you avoid returns and exchanges, ensuring you select the right size before purchasing.
COMPREHENSIVE HEALTH TRACKING: The Ultrahuman Ring measures a wide range of metrics including sleep, activity, stress, heart health, movement, workouts, and recovery. Stay on top of your health and fitness goals with detailed insights to optimize your performance and well-being.
WOMEN’S HEALTH INSIGHTS: With Ultrahuman Ring’s advanced women’s health features, track ovulation, cycles and pregnancy. Through multi-biomarker-based tracking for those looking to conceive, predict a 7-day fertile window and pinpoint ovulation with precision. Access cycle tracking combined with biomarker-based personalized guidance for every phase (Menstruation, Ovulation, Follicular, and Luteal). With Pregnancy Mode, expecting mothers get tailored pregnancy insights throughout each trimester.
ONE APP, NO SUBSCRIPTION: Enjoy all the essential standard features of the Ultrahuman Ring, including sleep, activity, stress, heart rate, heart rate variability, skin temperature and recovery with no subscription — on the Ultrahuman App.
ADVANCED SLEEP TRACKING: Ultrahuman Ring provides detailed insights into all your sleep stages — REM, Deep Sleep, Light Sleep and Wakefulness, along with actionable steps and nudges to improve sleep so you’re ready for the day. It also tracks sleep debt, helping you understand your overall sleep quality and identify areas for improvement. Optimize your rest and recovery with accurate, personalized sleep insights.
MINIMAL FORM FACTOR & DURABILITY: The Ultrahuman Ring is crafted from space-grade titanium, offering unmatched strength and lightweight comfort. It’s water-resistant up to 100m, making it perfect for everyday wear, workouts, and even swimming.
HSA/FSA ELIGIBLE: The Ultrahuman Ring is HSA/FSA eligible, allowing you to use your health savings or flexible spending account to purchase the ring. This makes it easier to invest in your health and wellness while saving on taxes, making it a smart choice for anyone looking to optimize their fitness and recovery.
A GAME-CHANGING PERSPECTIVE ON STRESS: Get a deeper understanding of stress with a unique “Stress Rhythm Score” which considers the variations in your Heart Rate (HR), Heart Rate Variability (HRV), and Resting Heart Rate (RHR) against the backdrop of your circadian rhythm.
POWERPLUGS – Your health journey is unique, and PowerPlugs allows you to focus on what matters the most, to you. Understand how your heart responds to activities, stress, and rest, with the Cardio Adaptability PowerPlug; track your screen time and its impact on your health with the Screentime PowerPlug; enhance alertness and improve wakefulness with the Caffeine Window PowerPlug; and more.

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