I decided to buy this device because I have been tracking my wife’s oxygen levels while she sleeps at night using the regular finger reader device and it’s exhausted for me waking up by night, taking the finger reader, see the reading and write it down in my phone. I have found this device very convenient and allowed me to sleep more while she is being monitored by the device itself. Just a small inconvenience, its battery doesn’t last long. I have to charge it every day. I like the ring so far.

Overall, does the job to let me know my oxygen level and collect collect data. It's a bit clunky and there's some inconveniences. With improvement, it'll help many people out there with sleep apnea like myself. There's not many items like this out there so happy to help develop this into something better by providing feedback.
Ring - does the job of monitoring my oxygen level when it's on. Sometimes I wonder if it's accurate as the ring buzzes at times when I'm awake and trying to fall asleep.
Battery life - too short. Wish it could go for a week or even at least half a week before it needs charging. Dies on me after about 10-12 hours.
Mobile App - This needs the most work. Once you click the App, if you get out of the App to use another App, the App doesn't reload. You have to close the App then click on it again. Also, if the battery dies halfway through the night, it doesn't capture the data from the time period it was on so there's no auto sync until you turn the ring back on and reload the App.

This device is much beyond my expectation! The results are reliable, and it's very easy to use. I put it on my finger right out of the package and it was already giving me a Sp-O2 and HR reading. The app was straightforward and easy to setup. I've ordered another one for my father, who just left the hospital after having COVID, pneumonia, and kidney failure. He’s in rough shape and now on oxygen at home thanks to the virus. He’s been using this tracker to keep an eye on his Sp-O2 levels in particular. He said that when he is off of his oxygen tank, his Sp-O2 reading goes down into the 80s, but on oxygen he maintains 99%. He tested this tracker against his another Sp-O2 reader and this Wellue device does a much better job. It is consistent, accurate, and reliable. He has been using the tracking app every time he gives his doctor an update. This device has been way more helpful than I could have ever imagined. I’m so thankful that a product like this is available on the market for regular consumers. This little device brings so much peace of mind to our family.

Awesome battery life, very easy to operate, comfortable and nowhere near as cumbersome/intrusive as I thought it might be after using hospital monitors. Android app is a little buggy and works well enough for quick checks but being able to export data as a .csv gives me the freedom to analyze it how I want. Already recommended it to 2 family members.

This is a very user friendly SP02 device. If you have breathing issues like I do with my sleep apnea, this ring should work for you. I believe the SP02 results are more like to be the most accurate. I like that it connects to your phone quick and easy. I like that it keeps track of your levels continuously and you can even print out the information and give it to your doctor if needed. This will also alert you if your levels drop out of range.

Reliable and accurate! I got one and love to take it out when travel. You can wear it at night so it vibrates to remind me to sleep on me side. I on the other hand got a CPAP and it helps me monitor with the data it produces. You just need to go to bed, put the mask on and wear the ring to monitoring your oxygen saturation over night time, and check the record in the morning. I keep adjusting and am moving from the low 5 rating into the upper 8's for O2 score.

Recently I was feeling fairly exhausted in the day time and having a feeling that I wasn't sleeping soundly. I don't know if it's because I haven't used my CPAP machine for 2 years. But I don't have a link to my CPAP records anymore so I figured I'd get this cool, lightweight little ring and use it to do my OWN sleep study. Well, of course, I had 02 levels in the low 80s about every 2 hours all night! So i got out my CPAP and wore it at the first night. The results were kind of surprising. It seemed that I had some problems but I slept through the entire night with my CPAP. Now, I won't use my CPAP without this little ring. It is comfortable, is most likely accurate, and it is really an incentive to use my CPAP machine because after adapting to it, my oxygen level never in the 80s now. If you like to have instant feedback for using your CPAP machine, this little ring did that for me. The phone app works well. You can download your results to a pdf and show it to your doctor if you want a professional sleep test in center.

Overall it functions as expected. After 10 days recording my data, I had my wife wear it for 1 night who is a Nurse, not sleeping well and been prescribed ambien for sleep for years. First couple of nights showed low O2, heart issues and clearly sleep apnea. She is scheduling a sleep study as well as testing nights without ambien to see if this is the cause. This is a TOOL and clearly needed to determine exactly what is happening during the night. We use many drugs to help sleep, but we are finding these drugs are making or causing sleep apnea or making it worse. I don't understand why Health Care Providers, Hospitals and Insurance companies are not handing these out more frequently to get real data at what is causing health issues (also because these are much more affordable than sleep studies or other tests). The software needs a little work, for example, trying to turn off the vibrating alarm doesn't have a button to save. If you turn it off and then hit configure again the change wasn't saved. But if you do it 3 times, you can get the alarm off. We are running without the alarm to get raw data and do not want to be woken up while testing. I believe this to be a tool and not a cure. Being woke all night will cause other issues, but this tool is absolutely needed to determine what is going on over a period of time. It can be used to test drugs including things like Advil PM to see if they make things worse at night (Advil PM increased my sleep events 5 times). The CPAP machine clearly saved my life, this tool could have identified my condition much earlier. My wife can clearly see something is wrong ahead of any poor health conditions which makes this a preventative tool as well. I would recommend this product to anyone even curious about what happens to them during sleep. I'm sure the improvements in the product will come, you do need to charge the battery daily, software improvements and after you download, you have to disconnect USB port and reconnect to get charger going. Lots of quirks, but the benefit outweighs the issues. SINCERELY! No one paid me, I entered this on my own. Dan

Nice product! Wearing it doesn’t bother you much during daily life. Data works with your iPhone so works pretty well. My doctors were very impressed with its accuracy as well. I would recommend.

I purchased it because I am having exertional oxygen desaturation. I was concerned that it would be too bulky and disrupt my sleep but it is pretty comfortable. I'm satisfied with its easy operation and accuracy. Its readings are accurate based on my other devices. I cannot imagine what else you could want out of this device. I would recommend it for anyone trying to track their O2 stats.