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

If I could give it less than 1 star I would. Sensor worked for only 8 days, and then gave me a “Signal Loss” message. I went through all the trouble shooting steps in the app, and checked all my phone settings. Signal NEVER came back. App says if signal loss lasts longer than 3 hours, contact customer service. I went through the app to manufacturer’s website. Customer service is an automated chatbot called SteloBot. Eventually, I was able to request chat with a live agent in the Philippines, which is also where their technical “support” is. The agent said they would request a Case ID be assigned and open an investigation, and that I would hear back in 1-2 business days. The next day, which was Saturday, I received an e-mail with a case ID number, and a link to fill out the customer service form. There was space to provide details of what the issue was as well as the sensor serial #. Before I could submit the form on Sunday, I received another e-mail saying that if I didn’t respond within 24 hours, they would consider the case closed. I submitted the form. The Stelo/DEXCOM system, acknowledged receipt of the form, and again said I would hear back in 1-2 business days. 8 days later I still had not heard back, so I again went through the Customer Service rig-a-marole, to finally contact a live agent. They were polite and apologetic,and they requested a “reinvestigation” . I received an e-mail later that day saying, my “customer service issue could not be validated” (whatever the hell that means), and that they would not replace the faulty sensor. I contacted customer service AGAIN, and asked what “could not be validated” meant. I was told the “computer investigation” said the signal came back after 10 mins. I told the agent that was not correct. The app said “Signal Loss” and the signal NEVER came back. I checked multiple times a day for the remaining time the sensor was supposed to be working. Never came back. I asked if there was anyway they could just replace the sensor anyway, and was told that it was not possible for her to override the computer’s decision. I told her once again that the “computer investigation” was incorrect, and that there was no communication between the sensor and the app on my phone, after the initial signal loss and that the signal never came back. I was told that they could not manually issue a request to replace the sensor. For what it’s worth, there also seemed to be no mechanism to attempt to re-pair the sensor with my phone, or the app installed on my phone. While it was working, the app/sensor worked okay. Be aware, the sensor DOES NOT measure actual blood glucose. It measures the amount of glucose in your interstitial fluid in your tissues, just beneath your skin. If you’re diabetic and/or need your exact blood glucose, this is NOT the device for you. I’m almost 70. Blood glucose was not diabetic level, but was higher than my doc would have liked on my last 2 physicals. My wife is an RN, and thought these might be a good indicator of what affected my blood glucose and by how much. The accuracy is roughly + or - 10%. Just be aware of that. It’s more for blood glucose trends than actual, accurate blood glucose, so if you’re diabetic and need exact blood glucose, you probably don’t want to rely on this product. The customer service for this product is EXTREMELY WEAK in my opinion. Let’s face it, we paid Amazon roughly about $110 for a two pack of these sensors. The manufacturer probably pays around $10-15 per sensor. The fact that they refused to acknowledge a faulty sensor and wouldn’t replace it tells me all I need to know. Yup, you guys got me for $110, and saved $10-15 on replacing a sensor, so in theory, you got me, ONE TIME, for $125, but I will never again by ANY product associated with Stelo/DEXCOM, and I will discourage family and anyone else who is considering it, from purchasing one of their products. For what it’s worth ; out of curiosity, just checked other reviews of this blood glucose monitor. They actually have a higher percentage of 1 star reviews than 5 star reviews. What does THAT tell you. AVOID THIS PRODUCT !!!! WOULD NOT RECOMMEND/WOULD NOT BUY AGAIN/ABSOLUTE CRAP !

When ordering these I saw reviews about issues contacting customer service as well as problems with adhesion and even pain for some people but after I looked in to documentation and how this device works and what support is expected and how to handle issues I felt pretty comfortable ordering. I ran though two sensors and each lasted entire 15days and I am on the third one right now 3 days in. My overall experience has been great and I will try to address some of the common issues and pitfalls you may want to avoid. This device is a derivative of Dexcom G7 that are sold for diabetics by pharmacies with prescription only, main differences between Dexcom G7 and Stelo from what I know are: 1) Dexcom G7 is 3 sensors 10 days lifespan each, while Stelo is 2 sensors with 15 days each 2) Dexcom G7 has calibration in the app, white Stelo does not have this feature. 3) Dexcom G7 has live support because it is a medical device for patients with diabetes and is only available by prescription. 4) Dexcom G7 costs more - that I think is the obvious one. Lets go over each one, Stelo explains in its documents that it expects over 80% of its sensors to last all 15 days it also mentions that should a sensor fail before 15 days they will replace it. They also mention that over 90% or so will last 10days This means that medical device G7 is limited to 10 days because of much higher survival time %, while Stelo is allowed to run 15days with bit higher probability of failure which reduces costs to the consumer - as they only get two sensors and they are protected from failures by replacements. There is no calibration because accuracy is not as important for average person without medical condition, and incorrect calibration may mess up accuracy. Consumer version is targeted for general trends and not for precision accuracy, I agree with this decision. Medical grade devices have phone support but they also cost significantly more and require prescription and doctor visits. When using Stelo you will be limited to chat and email support, but in most cases sensor failures will be reviewed and decision will be made about the nature of the failure. Company can monitor these devices and it knows when device fails and how based on telemetry form the sensor and how it failed. Expect that support will be weak but they will address failures and if they meet criteria - these will be replaced. If sensor fails for me I will post the process and update. Now about the device and user experience - it is important that you apply the sensor properly and in the correct are, if you make a mistake here - sensor will not be covered by warranty. Watch some videos, learn how prep the area, how to find the right area, how to best position the applicator. Simple rules are to look for fat on the back of the hand, with your finders find the fatty are - avoid muscles. if you apply this to a muscle - you will bleed, you will be in pain and you will kill the sensor. If you use the included patch it lasts 15 days no problem, but this patch is soft and you will notice the sensor more, if you get high quality patch with a hole for G7 then it is thicker and will distribute movement better and sensor basically disappears. I added photos of the patch I use from Onida and it made a big difference. The app is very simple and well made and works amazingly well, you can bring sleep data, exercise data and food data right on to the chart via Google Health Connect if you track and monitor those activities in other apps. Over that last 30+ days I saw disconnected sensor few times, it was always when i was not near my phone and it reconnected on its own once I was close. Having a phone on, in the same room works fine, it is only when you go in to another room it may loose connection. Apple seems to have support for direct connection to watch so sensor talks to the watch and phone is does not need to be close by. Spend time making sure area you apply the patch to is clean - use alcohol to remove oils, make sure you place the sensor in the right area, add high quality patch. Placement is most important part of the process, take your time note what worked. For me placing the sensor with release button facing the shoulder was resulted with best experience, actual filament entry is on that side. Some advice I got from others, is to apply next sensor while existing one is still working and let that new sensor warm up before switching to it, some people do it 30min before and some people do it 12 hours before the switch so data is most accurate and there is not gap in the data. Sensor will continue to work 12 hours after 15 days are up and I tested that on my last sensor, where app said sensor life is over and it showed 12 hour countdown reminding me to switch over to new one. *** This is first update on Jan 23 and I plan to update again after I complete all 4 sensors.

I’ve been using Stelo for about 4 months now. That’s 2 sensors per month. I gave this device one star because of how frustrating it’s been using them and how horrendous Dexcom’s Stelo customer service is. I’ve had 3 sensors fail on me. Found out that there is no phone number you can call for customer service. You are forced to text a chatbot on the Stelo app. After trying to explain to the chatbot what went wrong I was finally directed to log in to start a case. When I logged in I had to explain everything again to the chatbot then it directed me to another chat with a live person. I had to explain everything again then I was abrubtly disconnected from the chat. Was not able to actually speak to a live person. I was sent a replacement but the process was a pain. After that, I always dreaded having to start a new sensor hoping that it would not fail and I would not have to deal with the crappy customer service. About a week ago another sensor failed. This time I got a message that the device had ended early while it was still warming up after putting it in my arm. I had to deal with the crappy customer service again. They did send me a replacement but the replacement failed to pair with my phone so I could not use it. Again I had to deal with the horrible customer service to try to get a replacement for the replacement. I got an email letting me know the case number and that I would get a response within 2 days. I did not hear back so I had to try to contact Stelo customer service again using the chatbot because you cannot reply to the email they sent. Found out that customer service had closed the case without informing me and they would not be sending a replacement for the replacement that failed. I could not believe it. These sensors are not cheap and they refused to replace their replacement that failed! I refuse to continue using this product because every new sensor is a stressful gamble. Will it actually work or will I have to deal with the horrendous customer service and will I actually get a replacement for a failed product?

WARNING: This meter may result in you quitting your toxic job. No joke, it happened to me. Here's the thing, without this sensor I'd still be chasing numbers. Because of this meter I figured out that: --I have somogyi which is different than the dawn effect. And it's horrible but preventable. --I can't eat carrots. My body spikes even with a very little. It's not supposed to but mine does as if I've included candy with my meal. --Eating vinegar water and protein first, followed by fat then fiber really does matter to my body. --Stress makes me spike. A friend called with bad news and I saw my sugar rise. That's because stress releases cortisol which is a steroid and steroids raise blood sugar. But I saw the rise and it blew my mind. I just quit my job in a toxic environment because my boss frequently rants at the whole building and I saw my sugar rise 20 points in 40 minutes. That's how long the rant was and then it took about an hour to come back down to pre-rant level. --I work around nurses. I had one finger stick me and the next sensor update matched. That's how I also found out my home meter from the smiley face store is way off. Do I recommend this meter? Instead of being in the dark I now know what effect every move has on my sugar. Heck yes. I don't know how anyone actually manages sugar without one. If you really want to manage your sugar, knowing what your number is at a given moment is way better than loosy goosy finger sticks. Although my boss probably deserves to watch me pull out my meter and shed a little blood on his behalf. There are three things I don't like. 1. The first is that there isn't any alarms so if I go low in the night I won't know and I'll rebound into somogyi the next day. AI has now taught me how to prevent it but that's a different review. The meter says it's not for someone who could go low but if you are diabetic and on medication that doesn't make sense. 2. It actually reads the sugar in interstitial fluid so it's supposed to go on the back of the arm where it's nice and fatty and won't get compressed much but that doesn't work for me. I sleep on three sides and each could result in a compression error if I'm on top of the meter. Also I work with the elderly demented and they love to grab upper arms so even if it's covered it's still vulnerable. If it's not covered it's something they want to pick at. My next one will have to be placed in a less vulnerable off label location. 3. It looks like a medical device which is lame. It's dark gray and stands out. Maybe they can come up with a sensor location that doesn't broadcast one's health status to the world. Otherwise they should pay for the advertising. If you want to really manage your health this is an invaluable tool. I'm hoping my next sensor is as accurate. Update: I was chatting with a popular online data processor and uploaded my graphs. Today it suggested that I'm not insulin resistant but glucose sensitive 🤯 What a journey this is. I plan to continue to wear the monitors until my routine is set in granite. I might still after that because it reveals when stress suggests I need a change.

Stelo CGM Review: My 13-Day Experience as a Prediabetic Background: As someone with HbA1c of 6.0 (prediabetic), I started using the Stelo Continuous Glucose Monitor (CGM) to get ahead of my condition. I also used a manual fingerstick glucometer to cross-check accuracy throughout. 1. 3-Day Update (Early Impressions) Over the past 3 days, I carefully compared readings — taking at least 30 fingerstick samples and comparing each with corresponding data from Stelo. Consistently, the Stelo CGM showed readings 8 to 15 mg/dL higher than the fingerstick measurements. I understand that CGMs measure glucose in interstitial fluid, which can lag behind fingerstick readings from capillary blood by about 15 minutes. That said, the difference I observed was very consistent — Stelo was always higher. . My Verdict: 1. Stelo is a useful tool for identifying trends and patterns over time. 2. It is not as precise for exact moment-to-moment readings. 3. For accurate blood glucose levels, fingerstick testing should stay the standard. . Notes: However, CGMs like Stelo can be very helpful for daily decision-making, meal timing, and understanding how lifestyle impacts glucose. . If you're looking to spot trends and improve metabolic health, Stelo is an option - just remember to double-check with a manual test when precision matters. 2. 10-Day Update (Mid-Way Review) By Day 5, accuracy dropped sharply: Stelo showed 25–30 mg/dL higher than fingersticks, even at rest. I fully admit I’ve pushed the sensor hard: -Daily gym workouts, heavy lifting, running. - Swimming 4+ times/week. Applied a Skin Grip patch, which impressively kept the sensor secure through sweat and water. Despite surviving physically, data quality of CGM declined: -Only helpful for general directional changes - rising, falling, or steady. -Not trustworthy for absolute numbers. Decision: I would keep it on for trend watching, but no longer trusted the data for actionable decisions. 3. 13-Day Final Update (Sensor Fail) By Day 10: Readings became wildly erratic, jumping from e.g. 120 → 170 → 110 within minutes. No longer reflected any real trend or state. 4. By Day 13: Battery died and I removed the CGM. Remarkably, Skin Grip still held tight. Final Verdict on Stelo CGM (Sensor #1) -Days 1–5: Solid performance, good directional data, valuable tool. -Days 6–10: Usable only for trend direction (rising/falling). -Days 11–13: Garbage — data was erratic, unreliable, and eventually the device died. Conclusion: If you're prediabetic and want to learn how your lifestyle affects your glucose, Stelo may provide short-term. But: -Don’t trust the exact numbers. -Be wary if you're physically active — sweat, motion, and water appear to impact accuracy over time. I’ll test the second sensor, but my expectations are modest.

I have been using the Stelo glucose biosensor for months, so I have a good understanding of what to expect regarding installation. However, my most recent purchase resulted in the THIRD malfunctioning device. I have now lost $150. One sensor would not adhere; another sensor would not connect to my app; and this third device fell apart when I push the button. I contacted Stelo directly, filled out paperwork twice with no response from the company. I went with Stelo because it is sponsored by Dexcom but this is the end. Amazon would not assist with this situation which surprises me. The company clearly does not stand behind its product and at this point, I cannot continue to stupidly, throw money away.

This product works great! First set of 2 units worked flawlessly for 15 days as stated. Inserted using the applicator onto fatty area at back of arm, was easy, painless and took 2 minutes at most. A quick scan of the QR on the applicator and there was immediate recognition and it starts the 20-30min warmup. After that you get a continuous flow of readings. It records glucose every 5min but uploads the readings every 15min. I waited until I tried a unit from a second order before leaving a review to make sure they all worked in light of all the negative reviews. Now on day 3 of my third unit and each one has been as simple and flawless as the last. Based on my experience with the last 2 units, I am confident that this one, and the next, will last the 15 days. Lots of reviewers complain about accuracy. In the past 5 weeks using Stelo I went through tons of finger pricks using a blood strip glucometer to assess accuracy. I found most of the readings were accurate, but rarely they were up to 20 units off. I am much more cognizant of what is going on while sleeping, the morning cortisol effect, the effect of stress etc. Also, many of the "keto friendly" stuff I used to consume I found is not so friendly after all. It is easy to enjoy a treat that you know may not be the best for your blood sugar if you just decide not to measure. It is a different thing when you see the numbers go up on your phone, so I've found myself avoiding foods that hit hardest, and have added some moderate exercise after some meals just to get the numbers trending down. It is too much effort and expense to do glucose tolerance tests for every meal item you consume and impossible to do it while sleeping using a blood strip glucometer. All is done automatically with stelo; I wish I had these many years ago. I also appreciate the discrete profile of Stelo. I've heard folks complaining about other CGM's setting off audible alarms, which I would not appreciate. The weakness I have experienced is the software. The Stelo app works great, and I appreciate its ease of use and ability to go to Dexcom Clarity to get a more in depth analysis. However, Stelo must get an app to allow Android users to see the glucose readings on their watch. I have a Samsung Galaxy phone and watch (as do many millions of others), and I want to glance down at and see my glucose level (as a complication on a Samsung watch face). It seems like such a simple piece of code to write. I like the Stelo CGM but if a competitor came out with a similar sensor unit with an app that integrates with my Galaxy watch I would switch in a heartbeat! Update 8/10/25: I'm on my 4th Stelo, and while the 3rd had a few glitches with low readings, it fixed itself and was still super useful. Just waiting on the Samsung watch compatability now 😃 Update 9/15/25: Removed my 6th Stelo because it has been giving major high numbers that did not match my blood (e.g., 160 vs 112). This wasn't a 1x event, it was consistent for several days and had me concerned until I did blood sticks. Put on my 7th Stelo and it would not pair, no matter what I did. Removed it and put on my 8th, this one seems to be giving decent readings. #7 and #8 were in the same set, indicating that quality control is not good for this product.

UPDATED 9/16 Okay- it pains me to do this but I’m revising my rating. The first sensor worked great, game changer. But when I changed sensors after the first one was done I’ve had nothing but issues with the 2nd one. And it’s IMPOSSIBLE to get help!! Your forced to deal with a bot and if you can get to the point where you can actually open a case, good luck because you cannot even correspond to the email you send to further explain or provide info on th issue because it’s a no reply email?! Huh?! What kind of service is this? Zero service. I reached out to Stelo via a bot (your only option unless you can manage to get to the chat during certain biz hrs), finally got to the point where I could open a case only to be told in an email response to my case that I need to fill out some form which they never sent and then they proceeded to close my case the next day! I could not even respond to let them no that no form was ever rcvd (and yes, I check my spam/junk) …And yet I’m still stuck with a faulty sensor. I cannot even respond to the case email! It gets kicked back - so while I think the CGM as a device is amazing for understanding where your blood glucose is without pricking your finger all day (and seems more accurate too!) I cannot support a business who makes it so difficult to get help when it’s needed. I’m switching to a different company for my CGMs going forward. Sigh. I really liked the convenience of getting this CGM via Amz but it’s not worth this hassle when something goes wrong. Original! I’m working on a healthier lifestyle to better manage my blood sugar and was getting frustrated with the glucose meters being questionable when I did finger pricks. Between three different ones my b2b readings using the same finger prick would have variants of 10mg or more making it nearly impossible to determine which one was the most accurate. Decided to try this CGM and wow! Not only has it enabled me to find the blood glucose meter that is the most accurate it also helped me better understand my glucose levels after meals, exercise, during sleep patterns and has helped me stick to a lower carb lifestyle! I love seeing that I’m finally within a normal range day over day after making significant lifestyle changes!! I’m finally able to get into ketosis each day since it’s become such a great motivator to stick with that way of eating. I’m about half way through using my first of the two sensors. It paired with the app on the first try and through workouts, showers, and sleeping on my side, it’s still well intact. I purchased an additional pack of waterproof over patches that are a bit larger than the ones that come with it and I believe they have made a huge difference in protecting the sensor and keeping it in place. I’m definitely going to keep using these for the foreseeable future, at least until my next round of bloodwork in the next few months!! Im grateful to find and use this CGM w/out the added expense of a prescription. Making these more accessible is a game changer!