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Customers say
Customers find the ring sizing kit easy to figure out and use, with good quality and value for money. They appreciate its appearance and functionality, with one customer noting it works well even in the shower or washing dishes. The sleep tracking feature receives mixed feedback – while some find it decent, others report the step-counting feature is wildly inaccurate. The sizing accuracy and size fit also receive mixed reviews, with some finding it true to size while others report the largest size being too small.
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7 reviews for RENPHO Lynx Smart Ring, All-Day Sleep & Activity Tracking, Includes Charging Case, 7-Day Battery Life, Subscription-Free App for iOS & Android, Size Before You Buy (Silver, Size 9)
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Teri –
Sizing Kit – Worth Buying!
The sizing kit worked great! I wanted to replace a much cheaper fitness ring and figured the sizing would probably be the same (size 10). I figured it was worth the kit price to double check – and it was delivered quickly. It DID fit slightly tighter than my old ring so I wore the sizer for a couple of days. By the time I ordered the ring, I was reassured that it would fit comfortably and could be easily removed for charging even if my fingers were slightly swollen. My new ring fits perfectly and is MUCH more accurate. The app is definitely superior and much easier to use. Buy it!! 🙂
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mmatfess –
Buy this from Amazon. Really good product.
I got this sizing kit because I already own the Renpho Scale and wanted a cheaper ring instead of a Garmin watch. Unfortunately, I ordered the ring from shop and it took 3 weeks to get. I would have had it in a day through Amazon. So: kind of a mistake. Order through Amazon. I do love my ring. If you have the Renpho app already it syncs almost instantly. Battery life is superb: Regular use is 5-7 days, but when you track specific exercise it drops down to 4-5 days. The app shows heart rate, sleep score and 02, fairly accurate, I don’t find the stress measurement accurate, but that’s not important to me anyway
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Tony and Teri Davis –
Quality product, great price!
Excellent, preferred sizing set, without need of mandrel!
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Marijean L Higgins –
BEST Health Ring on the Market
There are several rings on the market that monitor your health and I have tried several (except Oura – I refuse to pay a subscription after forking over hundreds of $$). I have paid between $45 – $299 and all of them run out of juice after about 3-4 days. But this one from Renpho is the BEST!! I paid about $187, there is no monthly subscription fee, it is very accurate and connects to the app in my phone with NO ISSUES. I didn’t order the ring sizer. I just ordered the same size as all of the other rings I previous purchased and it was a perfect fit. The most absolutely best thing about it is that the battery life lasts 9 – 10 days between recharging. Now I will say that the life span depends on how many times you connect to the app to check on things but I could check it every night and morning and at lease a couple of times per day and that was still the amount of life I consistently got from it between recharge times. It can track just about everything the apple watch will except the new apple watches will detect sleep apnea where Renpho does not. Also this ring is eligible for FSA purchases. It is a little bit thicker than the others but is not impeding and it isn’t weighty. I don’t even notice I am wearing it. Again, if you are shopping for a health ring and just don’t know which one to choose, this one is the ONE!
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Brady Perry –
Size for index finger!
When ordering, nowhere in the description does it state it is recommended to be worn on the index finger. I had to return the first one because I had sized it for a ring finger and needed a larger fit. So far, it keeps nice track of my sleep, which is the main reason I wanted it. Time will tell about the other uses how good it is.Updated Review: The ring looks nice, wears well, but it doesn’t track steps accurately at all.
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Jaye –
Exactly What I Wanted!
Thanks to the Google/Fitbit merger, I have been in the market for a new device to track my sleep, steps and other aspects of health as I recover from a chronic illness. Since I don’t like wearing wristbands (especially during sleep), I set my sights on a Smart Ring, and the RENPHO Lynx Smart Ring was the 16th I’ve tried… Sweet 16!After trying multiple generations of Oura, RingConn, Samsung and other “generic” devices, I decided to try one more time. This is when I found RENPHO.I didn’t bother with the sizing kit because these rings all follow the same sizing format, and I knew that I could stick with the size 10. Fits perfectly, even when I suffer with swelling, I can just switch to a different hand or a thumb.Even though I do not agree with sleep metrics that claim to detect and differentiate between “Light” or “REM” sleep, there’s no getting away from them… They are on every device. What I want is an accurate record of “Awake”, “Restless” and “Sleep” time segments from my sleep cycle.(Like I had with Fitbit for 10 years…RIP), but I’m trying to deal with this new metric.RENPHO is the ONLY device that comes close (minus the bogus “Light” sleep) to accurately mapping my sleep cycle.This ring is exactly what I was looking for and I am very happy with the PRO’s:*Reasonable price – $170*No Subscription Fee*Light weight and stylish (I got the silver band)*Easy to setup and it stays connected (unlike some of the others I’ve tried this year.)*Accuracy with sleep and my few steps… Finally!*HRV, Heart Rate and PulseOx are accurate as well.The only CON (that doesn’t affect me) but may be an issue for other users:*Curved profile of the ring makes it slightly thicker than other rings, and might be uncomfortable while handling weights or bars during a gym workout.I would definitely recommend RENPHO and I will update with any changes or updates.
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Ronald Vargas –
Not good for real-time data
I actually really liked how light this ring was unknowing that it was actually a con, not a pro.unlike other smart rings that stay connected using bluetooth low energy, this ring does not.I’ve noticed this ring will ONLY connect to my iphone when i open the app, THEN it gets all the data from the ring and updates my app.This means i don’t get any “stand up, you’ve been sitting for x hours” or “are you working out?” notifications. it’s strictly for analyzing patterns over long periods of time.This watch also tracked my steps very differently than my apple watch. If i walked 5000 steps on my watch, the ring would say 4800-4880.I do think the sleep tracking was decent and the size was spot on.Overall, i would not get this if you’re looking for accuracy and real-time analyses. If all you’re looking for is seeing your patterns and sleep breakdown, it’s ok.
Teri –
Sizing Kit – Worth Buying!
The sizing kit worked great! I wanted to replace a much cheaper fitness ring and figured the sizing would probably be the same (size 10). I figured it was worth the kit price to double check – and it was delivered quickly. It DID fit slightly tighter than my old ring so I wore the sizer for a couple of days. By the time I ordered the ring, I was reassured that it would fit comfortably and could be easily removed for charging even if my fingers were slightly swollen. My new ring fits perfectly and is MUCH more accurate. The app is definitely superior and much easier to use. Buy it!! 🙂
mmatfess –
Buy this from Amazon. Really good product.
I got this sizing kit because I already own the Renpho Scale and wanted a cheaper ring instead of a Garmin watch. Unfortunately, I ordered the ring from shop and it took 3 weeks to get. I would have had it in a day through Amazon. So: kind of a mistake. Order through Amazon. I do love my ring. If you have the Renpho app already it syncs almost instantly. Battery life is superb: Regular use is 5-7 days, but when you track specific exercise it drops down to 4-5 days. The app shows heart rate, sleep score and 02, fairly accurate, I don’t find the stress measurement accurate, but that’s not important to me anyway
Tony and Teri Davis –
Quality product, great price!
Excellent, preferred sizing set, without need of mandrel!
Marijean L Higgins –
BEST Health Ring on the Market
There are several rings on the market that monitor your health and I have tried several (except Oura – I refuse to pay a subscription after forking over hundreds of $$). I have paid between $45 – $299 and all of them run out of juice after about 3-4 days. But this one from Renpho is the BEST!! I paid about $187, there is no monthly subscription fee, it is very accurate and connects to the app in my phone with NO ISSUES. I didn’t order the ring sizer. I just ordered the same size as all of the other rings I previous purchased and it was a perfect fit. The most absolutely best thing about it is that the battery life lasts 9 – 10 days between recharging. Now I will say that the life span depends on how many times you connect to the app to check on things but I could check it every night and morning and at lease a couple of times per day and that was still the amount of life I consistently got from it between recharge times. It can track just about everything the apple watch will except the new apple watches will detect sleep apnea where Renpho does not. Also this ring is eligible for FSA purchases. It is a little bit thicker than the others but is not impeding and it isn’t weighty. I don’t even notice I am wearing it. Again, if you are shopping for a health ring and just don’t know which one to choose, this one is the ONE!
Brady Perry –
Size for index finger!
When ordering, nowhere in the description does it state it is recommended to be worn on the index finger. I had to return the first one because I had sized it for a ring finger and needed a larger fit. So far, it keeps nice track of my sleep, which is the main reason I wanted it. Time will tell about the other uses how good it is.Updated Review: The ring looks nice, wears well, but it doesn’t track steps accurately at all.
Jaye –
Exactly What I Wanted!
Thanks to the Google/Fitbit merger, I have been in the market for a new device to track my sleep, steps and other aspects of health as I recover from a chronic illness. Since I don’t like wearing wristbands (especially during sleep), I set my sights on a Smart Ring, and the RENPHO Lynx Smart Ring was the 16th I’ve tried… Sweet 16!After trying multiple generations of Oura, RingConn, Samsung and other “generic” devices, I decided to try one more time. This is when I found RENPHO.I didn’t bother with the sizing kit because these rings all follow the same sizing format, and I knew that I could stick with the size 10. Fits perfectly, even when I suffer with swelling, I can just switch to a different hand or a thumb.Even though I do not agree with sleep metrics that claim to detect and differentiate between “Light” or “REM” sleep, there’s no getting away from them… They are on every device. What I want is an accurate record of “Awake”, “Restless” and “Sleep” time segments from my sleep cycle.(Like I had with Fitbit for 10 years…RIP), but I’m trying to deal with this new metric.RENPHO is the ONLY device that comes close (minus the bogus “Light” sleep) to accurately mapping my sleep cycle.This ring is exactly what I was looking for and I am very happy with the PRO’s:*Reasonable price – $170*No Subscription Fee*Light weight and stylish (I got the silver band)*Easy to setup and it stays connected (unlike some of the others I’ve tried this year.)*Accuracy with sleep and my few steps… Finally!*HRV, Heart Rate and PulseOx are accurate as well.The only CON (that doesn’t affect me) but may be an issue for other users:*Curved profile of the ring makes it slightly thicker than other rings, and might be uncomfortable while handling weights or bars during a gym workout.I would definitely recommend RENPHO and I will update with any changes or updates.
Ronald Vargas –
Not good for real-time data
I actually really liked how light this ring was unknowing that it was actually a con, not a pro.unlike other smart rings that stay connected using bluetooth low energy, this ring does not.I’ve noticed this ring will ONLY connect to my iphone when i open the app, THEN it gets all the data from the ring and updates my app.This means i don’t get any “stand up, you’ve been sitting for x hours” or “are you working out?” notifications. it’s strictly for analyzing patterns over long periods of time.This watch also tracked my steps very differently than my apple watch. If i walked 5000 steps on my watch, the ring would say 4800-4880.I do think the sleep tracking was decent and the size was spot on.Overall, i would not get this if you’re looking for accuracy and real-time analyses. If all you’re looking for is seeing your patterns and sleep breakdown, it’s ok.