Lingo Continuous Glucose Monitor (CGM). Made by Abbott. Optimize Your Nutrition with Real-time Glucose Data & Insights. 1 Lingo biosensor lasts up to 14 Days*. Works with iOS and Android. US Only.

If this sensor is useful or not, I will never know... because I could not get it to work. To apply the sensor to the arm is easy and you will not feel a thing. To install the app is a total different issue. I have a Samsung Phone and I use this phone exactly for the reason intended by Alexander Graham Bell and nothing else... like most seniors my age. I do not care one bit for all this nonsense and pretend functionality on a modern phone. Actually most phones are virtually unusable because the keyboard is too small for old fingers. But I did managed to "register" for a Google account. They of course ask me all sorts of questions which are none of their damn business... but I suffer with dignity so I go to the Google Play Store and search for "Lingo" and installed the app. The app started with asking me all sorts of questions... again, none of their business. I paid for the sensor so I should be able to use it, but no... they are more interested in my info. Then 10 or 20 pages later (i did not count) finally the page which read: Ready To Scan... I did hold the back of my phone directly onto the sensor which I had already put onto my arm. and .... nothing... then the message... Pairing Error... I tried numerous times Then I called the support line and as expected a gentleman with a heavy indian accent ( you recognize the accent when they call you and try to con you out of your money, never pick up the phone when you do not recognize the number). Obviously the guy talks too fast, uses unnecessary words and you cannot understand a thing. This went on for good 1 hour and nothing. among other things, he asked me to delete the app, reinstall this and then search for a red dot... ??? what red dot??? I still do not know what he meant. Anyway I told him, that I cut my losses and tell everybody about my ordeal. Then he suddenly offered me to replace the sensor. Very well I am down $50 already, might as well... arrives in 2-3 days, meaning 4-5 days because of the weekend. Why is there no "app" for this sensor on a PC. After all A PC has a screen I can actually see and a keyboard which does not require baby fingers. And for Pete's sake, do not ask me all these dumb questions, which are none of your business. If the replacements ensor works, I will try it... but then never again. Simply measure your morning fasting BG like before and that is that. Minute to minute updates are superfluous and expensive technology and a pain in the rear. 12/21/25 1:14pm Important update. I did not want to wait for the replacement and ordered another one yesterday from Amazon same day delivery. This one worked, but did not give me any reading for 1 hour and afterwards it was 20 points too low compare to the finger stick (73, 92). however this morning it was a lot better, In fact just now it reads 92 and the contour next fingerstick reads 95. I am more than happy with that. To be sure I get some benefit from this device... after all I learned that overnight my BG dropped to 55 for a brief moment... I seriously doubt that. All you can see trends, and I am lucky with this one, it is even accurate.... but I am an EE and I did work with large continuous datasets which were contaminated with large random errors and judging by the graph, it looks very much like a data set processed using a Markov Process. This is a mathematical process to get the best up to date measurement even when the whole data set is contaminated with random errors. But there is no free lunch in mathematics, nothing beats accurate measurements, no amount of math and statistics will make it better, even when it appears like that. In the moment I am happy... lets see, if the other reviews have a point. besides, why do you want to measure something you already know? Sugar and refined carbohydrates spike your blood glucose... its common knowledge... don't eat junk food and you do not need a CGM, Everybody who wears a CGM or reads this post, has already done the most important thing, which is educating oneself about nutrition... everything else is superfluous. Important update 05/Jan/2026 I am on my 2nd sensor. They last only 14 days for whatever reason, most importantly I guess, the glue will not stick much longer than that, probably the skin will secrete oils which dissolve the glue??? The good news was, that removing the old sensor was easy and it left no mark on my skin other than a tiny hole where the sensor was inserted. Unfortunately, the second sensor is also about 20 points too low, relative to the test strip. Of course one could argue that the test strips read 20 points too high, which I seriously doubt. Consecutive testing with test strips (Contour Next EZ) show readings within 5 counts of each other using brand new test strips. Overnight I get readings of 55 with the CGM, which is utter nonsense, because I am a recovering type 2 diabetes patient... even a reading of 75 overnight is hard to believe. The only useful thing I have discovered is that overnight my BG drops significantly. Morning glucose measurements are virtually useless, because of the classic BG spike after waking up. As soon as you out of bed, the BG is already on the rise and it can go up 30 maybe even 40 points within minutes and you have no way of knowing on which part of the curve you are measuring. So again, I have a warm feeling that maybe I have conquered my insulin resistance, just add 20 points to whatever the CGM tells you and when this is under 80 during the night, you maybe ok... still avoid carbs for the rest of your life

I’m an RN and bought this because I am super interested in all of the metabolic disease that is overrunning our country and feel that the current standard lab testing does a poor job in identifying problems early when there is still time to modify behaviors and outcomes. As I was looking at CGMs, I was surprised to see so many bad reviews. I’ve never written an Amazon review in my life but felt my experience was so different from the bad reviews that I needed to help people feel informed. The reviews noted issues with the CGM 1) Falling off easily 2) Not being accurate 3) Not working. I purchased the Abbott Lingo and was very, very impressed with the applicator, the biosensor, and the app. Everything worked flawlessly for the full two weeks when it appropriately ended its time. Regarding the issues others noted above: 1) I proactively purchased the Ceeport CGM sensor stickers and cut a small hole in the center since the dot on the biosensor can’t be covered. Abbott should probably consider including a sensor sticker with their package, but until then, it’s a no brainer to buy a $1 sticker to protect a $45 biosensor. The sticker lasted the full 2 weeks and I had zero issues with the sensor or sticker coming loose with daily exercise and showers. 2) Reviewers had complained that they did a finger prick glucose test and it was completely different than the reading on their CGM. I didn’t test my blood sugar at all during the two weeks, however I do know that the CGM is not testing *blood* sugar, it’s testing *interstitial fluid* (in the tissues) fluid, so it’s going to vary and it is a delayed result. My satisfaction with the rest of the product and seeing appropriate fluctuations based on meals/exercise/stress level give me confidence that this is likely pretty accurate. 3) When you initially open the app any time you want to see your reading, it says “sensor not in range” (or something) and the first time I saw this, I thought it wasn’t working. It does this every time you open the app, lasts 30 seconds or so, and then it pairs and all the info since the last time you logged in is uploaded on the app. It functioned perfectly for me for the two full weeks. Lastly I’d like to comment on the application of the biosensor. I was SO nervous about sticking myself with the needle. It literally did not hurt. The spring action made so much clicking sound when it fired as I was *very slowly, nervously* putting pressure on it, that it caught me off guard and all of a sudden it was applied and I didn’t even feel the poke! I was amazed. Nice work Abbott. The other positive component of wearing this CGM was the awareness of my body’s response to different foods. It gave me incredible insight (and therefore power) into how my diet was affecting me at the cellular level, and gave me great motivation to improve my dietary choices. I felt like the phone app was easy to navigate and very well done. Excellent product!

really not impressed: the first sensor out of the box of two is not connecting to my phone. I have been using continuous glucose monitors for two years now, and this is the worst experience yet. I know how to insert the devices, I know how to use glucose monitoring apps, I know how to troubleshoot things with my phone. This is either extraordinarily poor quality control or just a really lousy design. Being unable to test it by, trying an alternative means of connection (e.g., scanning a QR code or entering a serial number from the box manually) is very frustrating. I did try with the naked phone--but the case I use is thin/light, certainly does not impair pairing with other CGMs. Update: it's 2 for two, the box of two are both failures. Not impressed. Will allow them to replace once in case the box was mishandled in transit but after that it is Goodbye. My phone connects to other Bluetooth devices perfectly well, and has connected to other CGM's without difficulty. There is nothing like useful support on the website to help.... even the app is now locked on being unable to connect and offers no option to get to another screen or a troubleshooting section or to enter a trouble ticket. Telephone support took 25 minutes to get back to me after the first sensor failure; 24 hours later, it's the weekend and nothing after 2 1/2 hours plus it hung up on me after a few minutes when I tried to just stay on hold in case that worked faster. SUPPORT FAIL. Very poor design, no ease of use, poor support access. I was hoping for better accuracy but right now reading accuracy is zero because there are no readings. How do people with even worse mobility use something like this that requires some kind of magic touch? Update: only one of the promised 2 replacement sensors has arrived, and I have the same failure to connect on scanning for the device (phone is working fine with other bluetooth devices including a different CGM currently). Repeated downloading of the app and use of alternative app has not worked. I was promised contact with technical support who could troubleshoot potential settings with me--no message received after nearly a week. And today, when I called them to request technical support again, there is a new message on the support line--not relevant to me--that repeats on endless loop, not even an option for 'press 1 to be called back later according to your place in line'. This is corporate sludge at it's worst. Update 1/18/2026: Updated app (v 1.9.2) did not help. Today Lingo support is aware of problem with App and Sensors. iOS 26.2 12mini

OK, I've never written a review but since I've had a great experience with this device, I'm going to. I've been told by the doctor that I'm heading toward prediabetes, so it's time for me to tweak my diet, and I like to make decisions with as much information as I can. This monitor has provided me with a lot of useful information about trends in my glucose levels. The first week was to try and keep glucose at ebbs and flows rather than high and Lows., I'm already making healthier choices in terms of food timing and what I choose to eat. I used it with an iPhone. I 100% recommend this as a device to help you get an overview on how foods affect you personally. I have read a lot of the reviews after the fact, and I can talk about and confirm some of the pros & cons. As users, I think we need to set the expectation that it's not a high-dollar medical device and is best suited for looking at trending versus the perfection of the numbers. I did NO comparison with skin prick blood tests because, fortunately, that's something I don't have to deal with. pro 1 - It's super easy to apply, just make sure the area that you're putting in has been washed with soap and water and then cleaned with alcohol. Surprisingly, it did not hurt at all so I imagine that most should be the experience for most everyone, so long as you go slow and read the directions. pro 2 - The app is pretty easy to acclimate to, and so long as you log your meals/snacks, it will give greater meaning to the rise and falls you see in the graphs Con 1 - it was a bit cranky in connecting with my iPhone at first and it took quite a while to finally sync up, but it seems like somewhere in the literature. It mentioned that. Connected, it performed well. Here is what I noticed: if you set your phone down somewhere, it will disconnect. If you close the app, it will disconnect. When it does disconnect, it takes 20 to 60 seconds to re-sync. After reading the negatives in the reviews, I have a couple of suspicions regarding some of the problems AND... I am in no way dismissing that the company might need better quality control - if the device was falling off (so poor physical connection), I suspect some folk could have been a little sloppy with prepping their arm before. Also, some people just have oilier skin than others. When I applied it, I made sure to use something flat to make sure the rim of the adhesive was secure and watertight all the way around my arm, but that's just me. - on connecting problems, I noticed when reviewers said they replaced theirs and found it had a bent needle, which makes it easy to imagine if they flinched when applying (which I can relate to even though it didn't hurt), or had the applicator crooked, or even some may have thicker skin so low/no connection. - Technical skill level and patience: I suspect that the app connects to Bluetooth with some sort of 'backdoor' connection, because though it is connected and reading with the app, it does not show up as a connected Bluetooth device in my settings. Since I assume that the battery is small and therefore not very powerful, proximity to your phone is probably a huge factor. Fortunately, it seems to hold all the data and will update when you connect again. Improvement slingo could make: -Including a waterproof covering/Band-Aid with every unit -the ability to add when you hydrate as an event in the app -the ability to add a 'miscellaneous' event in the app, such as a stress moment or sleep interruption.

Customer service does not stand behind policy. Product works great, easy application, app is user friendly, the sensor does just what it is supposed to. My issue is with customer service. Had used the sensors for several months without any issues, last sensor I had in was to be changed out the next morning but I accidentally pulled it out while toweling off so I ended the sensor and applied the new one as instructed. The new sensor would not pair sending a message that this sensor had been ended. Contacted customer service the next day via chat as the website states a replacement would be issued if a problem arises before sensor has expired, chat went on for 2 hours and then agent stated he needed more pictures to verify purchase and would email as well. Sent pictures in chat and agent never responded again. Email came through several hours later, I responded to the email, the next day the agent replied stating the email was sent inadvertently and was not intended for me but they were still working on the replacement. I have emailed several times and it is 4 days later and I still do not have a resolution. Do not recommend for customer service.

Lingo is easy to put on and and connect to your phone upfront. But it constantly disconnects, which then requires you to turn your Bluetooth on and off and then reconnect it in order for you to see your account out of 10 of them to have been completely dysfunctional, but they do give you your money back pretty easy and or send a replacement the readings though are pretty poor the CGM and a traditional finger poke monitor are different classes obviously but I didn’t realize how far apart the readings would be my Lingo will say that my sugar is below 55 where my finger poke will say I’m at 90 almost every morning. It is off by 15 to 25 points. One thing I do find helpful. That whether the readings are right or wrong, it does help me to see which foods negatively impact my blood sugar more than others. So if you’re just wanting to see what’s happening in your body, it can be helpful but if you are a diabetic, I need accurate reads then I would think twice about using Lingo alone.

Update after 6 weeks: Pros: 1 see live glucose levels 2 average daily glucose levels over several canned timeframes 3 small and discrete 4 easy to apply and painless The data is eye-opening. In 6 weeks I learned my hunger is driven by a glucose roller coaster. The spikes after eating result in insulin that brings glucose down to levels that trigger hunger, which causes me to eat when my stomach is still full. Then glucose spikes again, repeating this process all day. This explains why I would eat all day and feel hungry all day. My chart looked like a sine-wave. The data helped me to make a few small changes that have stabilized my glucose levels. They neither spike very high, or dip very low anymore. They hover close to my average. Starting with a Lingo count of 66, I ended the 6 weeks with counts between 0 and 12. My starting glucose was averaging 117 daily and ended at 95. On an empty stomach my glucose was around 100 and now it is around 90. Without starving , feeling hungry, or trying, I lost 5 pounds, my triglycerides dropped 30% and my cholesterol has also come down. Pretty incredible. I’m actually eating more of what I love but using the knowledge of how my body processes the food to my advantage. I don’t have any hunger at all! Cons: 1 limited choices when logging activity types and foods & no way to save a list of repetitive foods. 2 missing beverage or “other” consumption tracking category 3 no custom/user selectable timeframes for average glucose levels 4 no user interface via web to view data or provide it to medical practitioner 5 no data manipulation capabilities for generating custom reports 6 data is locked in lingo app and cannot be exported for any other purpose 7 app can be “jumpy” and take you where you didn’t want to go, freezes, closes, and disconnects from sensor often 8 sensor does not stay on without medical tape. My first sensor only stayed on for 3 days before coming off. I followed the directions precisely for application but it did not last. The second sensor began to come loose after about 5 days. I ended using medical tape and that resolved the issue. By itself, it does not seem possible for it to stay on for two weeks. I throughly cleaned and shaved the area on the back of my arm, but no luck. The app does not allow you to search your food entries to quickly view reactions to certain foods, confirming or comparing results. Unless you’re creating a separate journal with your reactions sorted by food type, you are jumping back and forth between days and trying to find the information. This is not easily manageable if you’re very serious about getting the full benefit of a CGM. Also, the app doesn’t allow you to enter anything eaten in categories other than Snack, Breakfast, Lunch, Dinner. What about beverages? On my iPhone, when you are entering the name of the food, you cannot see the entry because it ends up behind the keyboard. If you try to scroll, it still does not show you the area you are typing in. This leads to lots of typos in the log. Another annoyance is that if you have a sudden inexplicable rise in glucose (I get them when asleep) the app only allows you to record exercise or food. You can remove the lingo count, but an indicator remains there requesting that you log an event. Those markers can clutter your chart with no explanation as to why they are there. Looking back you are left to wonder, did I forget to log food I ate, or is it an inexplicable spike? With some serious app updates and perhaps a website that has charts, reports and additional functionality, this could be a more powerful tool. As is, I only rate the app 2 stars out of 5 and the overall product a 4. I am off to try another brand of CGM to see if they have a better app interface to the date. Moreover, their over-the-counter model allows you to login online and see and manipulate the same data a doctor can see with their prescription version.

Heads up…Long review, I’m not a fan and can’t recommend it. I purchased 4 of these thinking I would get a good idea of what my diet and exercise was doing to my blood sugar for 2 solid months. First one worked okay. I did test it against a finger-stick monitor (Registered Dietitian here,) and found that it reads low. The monitor I used is made by Freestyle, same company (Abbott) that makes Lingo. My finger-sticks were about 5-15mg/dl higher than the readings coming from the biosensor. I tested it several times during the two weeks, most were 15mg/dl higher. I knew at that point that it wasn’t super accurate, but I could still see that even a tiny bit of sugary creamer in my coffee sent my blood sugar up and then crashing after a few hours if I didn’t eat anything else with it. That info helped me to give up the coffee creamer since I always tend to crash after sugar. I tested different sweet stuff, mixed with and without fats and protein. I was excited to continue with the next sensor and was planning to just stick consistently with my healthy low carb diet and not test sweets since I know I crash every time. I wore the first one without issue, knowing that it wasn’t super accurate I just looked for trends. It was fairly easy to take off after two weeks of wear, but I was surprised how sticky it still was. Hardly felt it on me or when I applied it or removed it. I could not sleep on my left arm or I would get odd swings in readings at night. After removal I waited two days and installed the 2nd. The second gave me a kinda high reading for me after an hour even though I hadn’t eaten anything yet, I think it was around 89mg/dl. Then I got the dreaded error: “Please wait 8 hours to see your reading or contact support.” No readings or history were showing. EIGHT hours? That seemed crazy. I did wait about 3, but nothing changed, so I emailed Abbott. I did get a response fairly quickly, maybe 12-18 hours. I’m sure a call would be quicker. I had to answer a billion questions and finally got an email back that a replacement was on its way. So I was told I could remove the sensor that I had on and trash it. Sensor 2 removal was tough. Since it was freshly placed, it was super sticky. After I finally got it off I was bleeding quite a bit, took a while to stop and yeah, that was fun. That one left a scary purple bruise. Since I still had 2 more sensors on hand I decided to place another on my right arm today (3 days later,) since my left arm is still bruised. I was a bit scared after the drama removal of the last one. Again, no pain applying. Whew. I was sure this would work. After one hour, (it takes an hour to calibrate,) this time it said my blood sugar was below 55. (Which BTW, I got that a lot when I wore the first sensor. When it’s below 55mg/dl, you don’t get a number, just <55.) then about another hour later I got the same error message again asking me to leave it on for 8 hours or contact customer service. Ugh. I did email Abbott a few hours ago and requested a refund for 3 sensors this time, no answer yet. I wore this one about 4 hours. Nothing. I just removed this second “error” biosensor and it was tough to remove like the last. New and very sticky, which is excellent if it’s going to stay on for 2 weeks, not 2 hours. Thankfully, I didn’t bleed much and no bruise so far. The app is pretty limited. Really needs improving. I did read that the Lingo goal is very confusing for a lot of people and I can see why it would be. It’s not intuitive. I got the hang of the app and was happy that it connects to Apple health and automatically adds my exercise. Easy enough to add food, but doesn’t connect to the Cronometer food tracking app that I use and love. I wish that the readings below 55 would be displayed since I tend to be hypoglycemic (low blood sugar) and it would be helpful to see what the lows were. I will say that I can typically feel my lows and my <55 readings did not feel like I was having a low. Wish I had confirmed a few of those with a finger stick. Great idea for self-help people like me. Needs lots of improvement. If you’re prediabetic or know an endocrinologist, or even talk to your family doctor about why you want to try one, especially if you’re worried about your health or have a family history of diabetes. I would ask for a prescription version of a CGM. Your doctor might give you one to try, but those need to be placed and removed by a health care professional. Your doctor will be more willing to give you a finger stick monitor if you’re willing to stick your finger first thing in the morning for a fasting reading, after meals and exercise. Monitor is cheap, test strips are pricy OTC. You can also get a prescription for test strips if your doctor sees a need. Seems scary, but it’s not too bad and it’s definitely more accurate if you're really worried about your health.

The device mobile app is not available in Saudi Arabia. App only available in US and UK