Dexcom G6

Shown for US

• Free

Last verified 31 Jul 2026

Shown for US

3.1 9024 ratings · App Store

1. 3/5Pros and cons

   This app is a game changer and I understand that however there are a few things (this may just be on my end but still.) I am getting signed out and having app errors at least twice a month if not more (more often then not more), which means I have to delete the app redownload the app, and do all of the onboarding sign on things. Really tedious and super annoying, but this happens very often. Another thing I also seem to be having issues with it the connection through me devices. Sometimes it will be working really well, and then all of the sudden I won’t get readings for my numbers for hours or even days. Which is really upsetting, especially if this happens when I’m out and I don’t have access to my meter. Another issues is receiving notifications, and I’ve gone in and checked, and redone them several times now to try and get them to do what I set them to be. I’m not sure about you guys but when I’m low i get to be especially Cranky, and hearing the beep every 5 minutes absolutely ticks me off. The beeping I understand is necessary however if I’ve taken action I don’t see the need for it to go off every five minutes. This being said I’m not sure why my notifications setting aren’t being activated, or used. A lot of the other issues I’ve had in the past aren’t really problems anymore besides the connection issues. This app overall has helped me a lot, and it’s been very good to keep and constant track of my blood glucose lvls.

   soukssssss · 31 Jul 2026

2. 4/5No Ketone option in events, not able to make notes (TL;DR at bottom)

   I really love my dexcom however I have a few complaints about the app. It would really be great to have an option to put in notes. Sometimes I will write have to write on a sticky note, but those can easily be lost between doctors appointments. Also I have recently gotten sick for the first time since getting my dexcom so I have been checking for ketones. I looked and there is no option in the “Events” to log ketones which I find incredibly odd, like why not? I have seen a lot of reviews talking about the signal loss problem. I personally have found that the recommended site for your transmitter, your lower stomach, produces the no signal problem a lot more often than other places. I alternate sites between my biceps and left and right lower stomach (always above my belt and pants line as this can cause interference) and I prefer my arms as when its on your stomach it is easier to sleep on and lose signal, your belt or pants may mess up the signal, and you happen to move your torso a lot and if I don’t stand just right at insertion I can feel the sensor every time I move. (TL;DR): No option to input ketones and no option to make notes (First paragraph). There is a signal loss problem at times but I have personally found that its usually the insertion sight that is the problem (Second paragraph).

   Mistbjorn · 31 Jul 2026

3. 5/5Works great + great support. Needs updated watch complications.

   Downloaded the app after getting an Apple Watch - love it. Haven’t had any issues with signal loss myself (iPhone X, almost always near me). I am using the watch complication with the older Apple Watxh face (Modular), but like everyone else here would love to see an update supporting some of the newer Apple Watch faces (e.g. Infograph Modular). Sometimes the numbers don’t update on my complication (I see “- - -“) but this is an Apple Watch issue, not Dexcom. Tapping it opens the Dexcom app and fixes the issue. Keep the Dexcom Apple Watch app running in the dock, and keep the Dexcom app on the phone running in the background to minimize this from happening. But the most impressive for me was Dexcom support. I contacted the email address Dexcom keeps posting in replies to other reviews, and got a personal call back on my phone from a knowledgeable tech support rep. I thought my Dexcom app was ignoring my high alert repeat settings - but turns out dismissing high alerts on the watch is not the same as dismissing them in the Dexcom iPhone app. I now dismiss alerts in the Dexcom phone app and my alert repeat settings are honored. Again - was an Apple issue, not a Dexcom app issue. Thanks Dexcom for innovating! While the app can always be improved - you all push the boundaries more than other CGMS providers when it comes to innovating within the constraints of the FDA approval process.

   xmasmoneky · 31 Jul 2026

4. 4/5Not fully iOS 13 compatible but 13.1.2 helps

   iOS 13.1.2 appears to fix most issues. Also using iPhone 11 Pro Max. Strongly encourage those setting up a new iPhone use the “Quick Start” setup to save in my opinion significant time because the process transfers data including transmitter info for the sensor from one phone to the next. Should one not follow this process, use iCloud for setting up a new phone or have any questions then definitely get Dexcom tech support on a call before beginning a data transfer or setup process. There are some unique steps you’ll need to follow during new phone setup and they can help you. Updated review to 4 from 1 stars. Still do not recommend downloading until Dexcom or Apple certifies the app and system will work with the latest iOS and latest iPhone models but should one not have this option then 13.1.2 should address many concerns. Upon certification I’ll update to 5 stars. Still get occasional transmitter signal drops after a certain amount of inactivity or when other significant Bluetooth use is occurring nearby (like on an airplane or in an Apple Store). But I often get the signal back in short order. Dexcom, also updated the app upon launch to identify there are known iOS compatibility issues so patients are aware problems may be present. A word of encouragement to Team Apple. I appreciate you want to be known as a healthcare company. Please do what you can to only launch new iOS versions when it’s fully known how a health app that’s this important may not correctly function. Some of the problems initially experienced were frustrating but it seems better now so thanks Team Dexcom and Team Apple.

   TB in SF · 31 Jul 2026

5. 2/5Does what it’s supposed to do. Barely

   But to be honest, a lot of options just aren’t there. Not a lot of information is available, the graph is hard to read as there are no lines except for going into a low blood sugar, the alerts don’t really work (you can set it to remind tell you that you have a high blood sugar every 30, 40 minutes, but no matter what you set it to, it still just alerts you every darn time it reads a high blood sugar), and the Apple Watch connectivity is so slow and erratic that you should not pick up and Apple Watch just for this system, as I did. It’s supposed to tell you if you’re blood sugar is going up or down, but they don’t seem to realize insulin takes 3 hours (on average for most people) to be fully used. When my blood sugar that’s going down 3 or 4 per 5 minutes, as expected, it apparently doesn’t read that as enough of a decrease to note it. I haven’t really been able to tell what exactly it needs to register a steady increase or decrease, let alone a fast drop/rise. So I can’t really rely on that feature that well either. So right now I’m paying a lot of money to check my phone to see my blood sugar, which is fine, still better than pricking, but considering the fancy app and all the promised features, , the cost of the whole system (recyclable/reusable sensor placers please?) and that my relatively ancient medical systems have far more user functionality and data without touch screens, the app NEEDS to get a overhaul.

   TheOfficialZamics · 31 Jul 2026

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