Stelo Glucose Biosensor & App by Dexcom—A Leader in Continuous Glucose Monitoring (CGM). 24/7 Glucose Tracking & Personalized Insights to Reveal Patterns. 2-Pack (Up to 15 Days Each). iOS & Android.

Great idea. Very motivational when it works.. That's the good news.The bad news. They aren't reliable and you may not be able to tell when they are spewing worthless/misleading readings.I bought this to track my progress at lowering blood glucose and learning about what spikes look like for me and wht causes them. I have a backup meter that I use that requires the finger-prick blood sample and I wanted a more continuous view.I had four of these devices.First one. Worked well for ten days. I periodically verified the reading with the hand-held meter and they agreed within normal parameters. But again, died on day 10.Second one. This came in a two-pack so I attempted to apply the second one. This one had a mechanical defect and would not apply.I wrote to Amazon and a replacement box was send about a week later.Third one. Worked well for 7 days and then just stopped. During that time the readings seemed to match my hand-held meter.Fourth one. I applied it and the readings were wrong from the beginning. I kept verifying, hoping that it would wake up but gave up 2 days later when it started giving such ridiculously low numbers that I contacted Stelo customer service.What a waste of time. I spent over 40 minutes giving details, after which they had me fill out forms to complain with the same data that I already gave them. Then I was informed that there would be a review process that would take days to determine if I was even eligible for replacements.I have an Android phone so I don't know how many other options I have but this is clearly not a solution.I highly recommend that you go someplace else until you stop seeing reviews like this!

Day 3 review:- Installation and aplication of the sensor is easy, painless and straigth forward. The phone app giudes throu the process. No problem at all. After 15 minutes sensor started sending data to the app as expected.- Patch provided with the sensor sucks: so far this is only problem that makes me unhappy about that product. If you plan to use it for longer period of time, definitelly get good quality patches.- In 3 days I noticed single event where app stopped receiving data from sensor for a brief period of time. No impact to overall processing.- After 3 days app shows 14 days till sensor replacement. So far so good.- I compared sensor readings with the medical grade glucose meter: looks like the sensor consistently shows 10-15% lower level than the glucose meter.- The app is simple to use and provides all information I need.- Used it during regular dayly routines, including walking outdoor and swimming in the pool. No problems detected.

If you need a CGM for diabetes I would use whatever device your doctor recommends. I have worn this for a day and it has already stopped reading twice and says "Brief Sensor Issue" with a note saying it could take up to 3 hrs to start reading again. I have attached pictures. It did start reading again soon after.It seems to be decently accurate if your someone who is just curious of your glucose readings. I have compared readings to a stand alone glucose meter that uses blood from your finger and they are only 4-7 mg/dl apart.This only goes down to 70 and beyond that it doesn't give a number. I would like to see how low my level gets.I read reviews prior to purchasing. I took the advice of many people who bought this device before who stated that the adhesive patch was garbage so I purchased a package of adhesive patches that got good reviews to go along with the device.So far the sensor has not fallen off and overall I am pleased with it, keep in mind I do not have diabetes nor do I wear this for medical purposes. I am more curious on how my body reacts to certain foods and when I'm sleeping.I have had no issues with the app. 4 stars since it has" sensor not working" issues twice within a day. Overall I will continue to use and would buy again for my purposes.