Stelo Glucose Biosensor & App - 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 !

I bought this to monitor myself for diabetes, as I am at risk. The monitor is as comfortable as it can be. I believe it has improved my overall health and improved my nutrition. It’s not a live glucose monitor INSERTION is relatively painless, especially compared to finger pricking! You feel the spring action of the device quickly putting the monitor on your arm. The 10-second manual pressure after insertion, as instructed by the manual, is more uncomfortable than the insertion itself. If you’re clumsy and bump it due to bad placement or absent mindedness — it will be painful but not terribly, less than stubbing your toe. If you put lots of pressure on it while sleeping (which is mentioned in the manual) it will be similarly uncomfortable, as mentioned in the manual pressure step. ADHESIVE patch that comes with each device is sticky and leaves residue (easily removable). I find that the adhesion of the device’s surrounding tape is enough. You must place properly, thoroughly clean the site beforehand with alcohol, and leave dry for at least 24hrs for adhesive to really really work. Device typically looks ready to be removed by days 12-14. You will see it is a thin wire that is inserted under the skin — not a needle as someone previously stated. REMOVAL of device is easy; like taking off a bandaid. LIFESPAN is typically 12-14 days. I usually remove by day 12 or 13 if I’ve been in the pool or had a particularly sweaty week. The APP is intuitive, especially if linking with Oura ring/app. The device updates to the app every 15 mins, with 5 min increments being monitored but only reported when synced during the update. Again, it is not a live glucose monitor. The AI used to help report nutritional information when logging a meal, can be unreliable and needs your review. Should be approached more thematically, I think. By using this device I have learned what types of foods/meals lead to spikes in my blood sugar and am able to plan accordingly. I will be buying more and more.

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!

I used Abbott’s continuous glucose monitor Lingo for a couple of years and several months ago switched over to Stelo. I made the change because Lingo maxes out at 200 versus Stelo’s maximum of 250. I often have glucoses that go in the 200-250 range and Lingo did not tell me how high they actually were. Application of each monitor is quite similar. Stelo differs only in that you actually push a button once you have placed the application device in the proper location and pushed down, while the Lingo applicator fires automatically. Stelo also comes with an additional adhesive ring that you place around the monitor. When done correctly, the attachment is very secure and I had no problem with Stelo prematurely falling off. (I actually had no problems with Lingo either). Stelo takes a reading every fifteen minutes, versus every five minutes on the Lingo. The app on the phone is very good, showing a graph of current readings as well as averages over the past 1, 3, 7, 14, and 30 days. Accuracy of the spot readings was, however, problematic at times. In a random sampling comparing blood prick level to the Stelo, only about one-third of the readings were within 10% of the correct value. Most were too high, sometimes by a lot. One time the monitor showed over 250 while the finger stick showed 167. Stelo says you can contact them if the monitor seems defective, and I did so in this one case. I filled out a form online and they promptly sent me a replacement. Lingo was also quite good with replacing monitors that seemed defective. In that case, I would talk to an actual customer representative. Stelo does not calculate a HgA1c based on average values, but it is easy to do yourself. Despite the discrepancies I described above, my most recent calculated HgA1c based on a thirty-day average was exactly (and surprisingly) equal to a value measured at the same time in a lab draw. Stelo is explicitly intended for people who are not on insulin, and based on my experience, I would certainly not want to use it to estimate an insulin dose. However, if you are a non-insulin diabetic or simply interested in blood glucose trends, the monitor is quite helpful. (Many insurance policies don’t reimburse for monitors in this population.) With the device, you can get an estimate of what type of foods cause glucose spikes and also a rough idea of how high they are. I find a monitor like this is most useful to see which foods cause glucose spikes and to get a rough idea how high the spike is.

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.

This is not something I would normally order. I don't like the idea of wearing something that screams I have diabetes. It is the vanity in me. However, my numbers were very off on my last doctor visit. So, I wanted to try something different. I was looking for something that did not require a prescription. There are not very many devices on the market. Of the two that Amazon offers, one (Lingo at a cheaper price point) can only be used with an iPhone. I have an Android. The delivery time takes a little longer than I wanted (5 days), but I purchased it anyway. It came with two 15 day sensors. The first sensor was very easy to put on and sync to my phone. The second sensor, however, experienced a problem 30 minutes after I put it on and eventually expired. So for the price point of $99, I am not very satisfied since this was supposed to be a 30 day supply. Some people have commented on the difference between CGM and BGM. I took the time to read up on this, and it is normal. One of the main reasons the two may differ is BGM measures glucose in blood, while CGM glucose in interstitial fluid (a fluid just below the surface of the skin). I also found out that this device is part of the Dexcom family, which is the maker of Dexcom G7 which requires a prescription. It can be paired with the Dexcom Clarity App for a little more detailed reports. There is a 20% chance that the device might not last the full 15 day time period, which again is disappointing for the price point. Customer service was quick to reply to my request for support, and they are sending a replacement. The ability to see how food have affected my sugar levels, to see where my numbers might be when I feel a certain way, without pricking my finger is great. Even though the detection range is 70 - 250, it gives a general idea that I use to determine if I need to prick my finger for a more accurate number. With this monitor you will need to use both, but not the BGM as much. I would still purchase again, because you can you FSA or HSA. I would prefer for the 20% fail rate not to be a thing, and if it weren't for that and the price I would give it a higher rating. I would recommend if you understand what you are getting.

**Update: 8/13-Sensor worked for 15 days, no issues other than me walking away from phone and disconnecting Bluetooth a few times, easy fix, connected again after turning Bluetooth off and back on, about a minute to continue tracking. Second sensor just applied, paired perfectly, no issues. With the "Skin Grip" cover patch applied, kept my sensor working 15 days without patch coming off even with sweating from exercise and in 100 degree Texas heat. Numbers can be high but I find it close and good for watching numbers over night, morning. History: I'm going on 50, not diabetic--could be Pre-diabetic (isn't everyone Pre-diabetic?), I have PCOS (mild) so I know I have insulin resistance and it still exists and that is why I'm tracking my numbers. Started Keto 4 years ago, dropped 60 lbs. I'm Perimenopausal and on HRT for those issues, so I have gained 10-15 lbs back last year due to this. We started exercising everyday--walking 3 miles, rowing machine so far. I started my sensor on 7/29 midday/evening. As of 8/1 my Stelo has been working like it should. I did some research about Stelo, proper placement, best patches/covers for it, what to download, how it works etc. My husband is type 2 on insulin and uses G7 CGM. So, I'm familiar with it and I can compare Stelo with G7 version. My equipment and Apps: I use an Android Samsung S24 smartphone, Samsung Galaxy Watch 7 and Samsung Health app with Google Health Connect app to get information from various apps for tracking. So, download the Stelo app, download the Dexcom Clarity app and use the same log-on information as Stelo. Clarity will save your tracking information and you will be able to manage Data sharing with your doctor/clinic. If you are a Samsung/Android user the Stelo app will show when you exercise and sleep under your glucose tracking. Comes in handy for knowing what you were doing during a spike or dip. You can also track what you ate at a moment when you have a spike also. Far as recommendations---- Skin Grip covers (for Dexcom G7 & Stelo) and I got the one that totally covers the sensor. DONOT use the cover that comes with your sensor kit. You can also buy the Skin Grip tacky wipes if you have had problems with the covers coming off early. Clean with an alcohol wipe well before applying these. Apply the sensor to the fat on the back of your arm closer to your armpit but not where the end of the cover will be in your folds of the arm, if you apply too far on side of arm in the muscle area you can bleed and bend the probe in the sensor. The reviews I've seen on here state that the sensor is either too high or too low on numbers. Well, the sensor probe is inserted in your Interstitial fluid below your skin, not in your blood. The readings will be slow to respond versus your actual blood glucose level. It updates every 15 minutes versus G7 updates every 5 minutes. I have tested with a finger prick test and the readings are behind but really close to accurate for me at times. I will update this review if I see any changes or if the sensor ends early. The fine print on the website states "up to 15 days" so it could fail early. The key is to apply the Skin Grip which keeps the sensor from popping in and out while you're moving around, showering and sleeping or if you're clumsy like me and sometimes bump into door frames and such---it won't pop off! I only gave 4 stars for now because I have found issues within the app that could be better experience for the user. Another thing I noticed in reviews is the errors with the sensor from lost of connection. You HAVE to keep your phone within 20 ft at all times. Sometimes I forgot my phone, walked off and got this error. A easy fix is turning Bluetooth on/off and it connected again (30 seconds?). It is easy to use and apply (my husband did the honors of putting the sensor on for me to get the best placement). The size is small and looks just like the G7. In comparison to the G7, Stelo updates slower but it works pretty much close to the G7. Buy the Skin Grip covers and I think this will allow the sensor to work as described because I think the sensor probe works it's way out with movement IF you use just the surrounding covers it comes with. I would suggest G7 users also buy these patches. You cannot use the Dexcom Follow app to track someone else's sensor like I can track my husband's G7. You cannot get glucose readings on your watch (Apple watches you can) but there are 3rd party apps that you can use to do this but you can't use Stelo App & Clarity with the 3rd party apps. The quality is the same as Dexcom G7, just works a little d slower but you don't need a doctor's RX and insurance for purchasing the Stelo! It's great for overall patterns in glucose but if you're diabetic or on insulin--talk to your doctor about getting the G7 to track.

First sensor fell off. And second sensor is giving me false readings. Saying my blood sugar is low despite that I've ate. Apparently they don't do refunds if ur dissatisfied with product. Claim was put in for replacement sensors but haven't heard back yet (less than 24 hrs). They don't have a 800 number to call. They refer u to chat bot for customer service and it is generated by AI. No real way to contact anybody. It is a shame because I probably never use a bio sensor again because it is too hard to use. So essentially I'm out of the money for the sensors plus the special wipes I bought seperate to make sure the sensor sticks. Shame it is made by a reputable name in diabetic supplies. What kind of company won't refund u back for foolishness. Shame I didn't read reviews first. Update: I finally got a hold of them. They are replacing both sensors. I already got one. I put it on and it worked. However because I work in a hot, humid environment, after 24 hours it came off. Not their fault. But if I known sweat is a factor I wouldn't have bought it. I am still waiting on the other sensor. However in 24 hours I got some valuable information about my glucose health. Which may allow me to pursue different avenues for diabetes management. If u can get it to work it is great. But if u don't have patience for adhesion issues and sensor failure don't buy it. Adjusted my review from 1 star to 3 star. I may pursue more replacements but definitely not purchasing again. Update 2: looks like I'm not getting the other sensor. When I tried to speak to customer service they kept saying are u still there while I was typing. I answered but the person failed to acknowledge i was there. However it still said we were connected. So I reached out to amazon and told them it was defective and about all the issues I had with the company. And they gave me a refund and told me to throw it in the trash. Finally I don't have to worry about it anymore. Not saying they will choose to refund everyone. But if u had a similar story try doing that. It probably helped I been an amazon prime member for a long time and I buy things regularly from amazon. Just saying. Adjusting back to one star because the company is crap and selling a sub par product.