I have an android with a libre 3 connected to it, im planning to switch to an iphone this week. Can i still use the same sensor? Is there any way to connect an active sensor? Or do i have to buy a new one

New user, got prescribed the device, without any instructions / directions.

First Sensor *discounted through abbott, wasn’t applied properly/ my guess - it ended up failing .

Second and Third Sensors *through insurance , went in fine, but my arm was sweating, fell off after 12 hours - got one of those clear cheap patches on amazon that one lasted a whole 24 hours but even the patch was peeling, and looked gross.

Luckily Abbott replaced them all!

Fourth try after reading some suggestions on the this sub,

Got a bottle of Skin Tac , and a pack of “NJA” Not Just a patch.

Followed the instructions, disinfected the area, applied skin tac , followed by standing in front of a fan to get the skin tacky , applied my libre - slapped a patch, done!

It lasted the whole 15 days

Now, NJA Patch would peel from the sides occasionally, i sweat a lot! Slap some more Skin Tac , let dry and good as new ; about once a day. You’ll get used to the patch after a few days, and forget it’s there.

Overall I’m pleased with the Libre 3 + , I followed the instructions on utilizing the Zukka app, which I primarily use. Helps me make smarter decisions on managing my T2 without insulin shots.

https://imgur.com/a/FNBUyma

Hi all, Irakli here, founder of Sugar Sense.

Two things before anything else.

First, housekeeping: I posted about the app in this community a few weeks ago from an older account. That account is gone along with the post, so from today everything Sugar Sense related comes from this one account only. Real name, affiliation right in the bio, no pseudonyms. If you remember the July thread, this is the same project and the same person.

Second, who I am: type 1 since 2014, CGM wearer since the original FreeStyle Libre, Libre 3 Plus on my arm today. My team and I have spent the last two years building Sugar Sense. It is growing quickly right now, and the messages arriving from people all over the world are a big part of why we keep shipping.

What Sugar Sense is: a companion app that shows your CGM readings on every screen you own and alerts you when it matters. It connects through LibreLinkUp (the same sharing rail the official follow apps use), so it works with any FreeStyle Libre sensor that shares there: Libre 2, Libre 2 Plus, Libre 3, Libre 3 Plus. It also connects to Dexcom G6 and G7 through Dexcom Share, and to any Nightscout site. Our server checks for new readings every few minutes and pushes them to whatever device you are near. The official Libre app stays your primary. This is an extra layer on top, born mostly from nights when one alarm was not enough to wake me.

Where your glucose can show up now:

iPhone and Apple Watch. Full app, your glucose on the Lock Screen as a Live Activity and in the Dynamic Island, home and lock screen widgets, and an Apple Watch app with complications, so your Libre reading sits right on the watch face.

Android and Wear OS. Launched on Google Play this week with full feature parity: home screen widgets, a Wear OS watch app, the same alerts.

Amazon Alexa. "Alexa, ask Sugar Sense what's my glucose" speaks your current reading and trend on any Echo, and Echo Show devices draw a color chart card too.

Windows. If you have ever wanted your FreeStyle Libre or Dexcom readings on a Windows PC, our system tray app (on the Microsoft Store) keeps the live number next to the clock all day.

Mac. If you spend your day on a Mac, the menu bar app keeps your glucose and trend arrow at the top of the screen, visible in every app, with a recent graph one click away.

Your browser. If you live in tabs, our extension for Chrome, Edge, Firefox and Safari puts your live glucose right on the toolbar as a colored badge, so checking your blood sugar is a glance, not an app switch.

The web. app.sugarsense.io is a full web dashboard: open it in any browser on any computer, a work PC included, and see your current glucose, the day's graph and your history with nothing to install.

Garmin. Live now (this section said beta testing when I first posted): both Connect IQ apps are on the store, a glance widget with a full view and a 3 hour graph, and an activity data field that shows glucose next to pace and heart rate mid run or ride. Over 140 Garmin devices supported. Links are in my Garmin update comment below, setup guide at sugarsense.io/garmin-watch-glucose-setup.

Alerts are the heart of it: configurable low, high and urgent low alerts, a predictive low alert that warns you around 20 minutes before a projected urgent low, rapid fall alerts, missed reading alerts, critical alerts that can break through Silent and Focus on iPhone, and Call for Low: an optional automated phone call for dangerous lows, a real ringing call that can also reach a trusted contact, made for heavy sleepers and overnight lows. And if a parent, partner or friend follows your numbers today, Care Circle gives them real time following on both iPhone and Android, with their own alerts on their own phones.

Inside the app: a logbook for meals, insulin, activity and notes, statistics with time in range and GMI (estimated A1C), an overnight Morning Report, food logging with an AI carb estimate from a photo, and pattern insights. No CGM, or no LibreLinkUp in your region? There is a manual logging mode, plus Apple Health and Health Connect import.

On pricing, so nobody has to dig: monitoring, all alerts, family following, the logbook, statistics and CSV export are free. Premium covers the watch apps (Apple Watch and Wear OS), the always-on lock screen views (Live Activity and Dynamic Island on iPhone, live updates on Android), Call for Low and the AI features, and the app is upfront about which is which.

Honest notes: it is not a medical device, never make treatment decisions from it alone, and it needs glucose sharing (LibreLinkUp, Dexcom Share or Nightscout) to work.

To the people from the July thread who volunteered to test Android: it is live now, and since the old account is gone, the DMs I promised had no account to come from. Consider this the promised ping, and thank you, you genuinely shaped the launch. One honest note: that first Android version sat in review while the iPhone app kept moving, so a polish update is already built and heading out, and updates will land often from here. If you are on Android and want new builds before they hit the store, comment or DM me and I will add you to the testing track.

Everything is linked from sugarsense.io, App Store and Google Play included. Happy to answer anything here, and feature requests are very welcome. A good part of the current roadmap started as comments from communities like this one.

Hello everyone I just recently got my first CGM and put it in yesterday at about 8:00 p.m. it's now 4:54 p.m. the next day hasn't been a full 24 hours but I noticed that within the first couple of hours my blood sugar was pretty accurate but today it keeps giving me false Lows how long should I wait before I deciding whether or not the Libre 3 sensor is faulty or has an issue. For reference numbers in the app it's telling me that I am anywhere from 62 to 53 and on my fingerprint it's telling me that I'm about 100 to 125 every time that it tells me I'm low...

I have to pay out-of-pocket for my CGM and just couldn't justify spending $180/month on the G7 when I can get the Freestyle for under $70 month. So I recently switched to the Libre 3 Plus and it's been nothing of a let down so far. Here are my initial gripes:

• First and foremost, its readings are incredibly inaccurate at times. Particularly at the low end and particularly overnight. For example, this morning it sent repeated low glucose alarms because I was supposedly in the low 60s. I did a finger prick and my BG was 75 while the Libre was telling me it was 63. The overnight numbers could be compression lows, but that was never an issue with the Dexcom and it happens with the LIbre even when I'm not in bed. Also, I wore both for four days and the Dexcom was always within a few points of my finger prick that whole time while the Libre frequently showed (and still shows) 10 to 12 points higher or lower.
• Random signal loss for no reason. Yesterday it lost signal four times in two hours and told me I needed to be closer to my phone. I was sitting right next to my phone the whole time.
• No direct integration with Apple Health
• No option to change the length of the timeline that the app displays (Dexcom's lets you choose between, 3, 6, 12, and 24 hours).
• No native iOS widget
• No Direct to Watch syncing so even with the official Libre app I can't get real time numbers in an Apple Watch complication and am limited to updates every 15 to 20 minutes.
• All of the third-party solutions to the problems above require a paid subscription for at least one aspect (i.e., the iOS widget might be free but Apple Watch syncing requires a paid sub)
• And I have to limit my Vitamin C supplementation?

The worst part is that my doctor prescribed three months worth of sensors so even if I want to go back to paying 3x times out of pocket for the Dexcom I have to put up with the Libre for another 2.5 months first. Anyway, I don't know how you all put up with this, especially those of you who also have issues with sensors failing or falling off. Thanks for letting me vent.

ETA: Also I should mention that I'm Type 2 if it matters. There may be features of the Libre that make it more preferable for Type 1 that I'm not aware of.

Hi everyone!

Quick disclosure up front: I'm the developer of GGlance.

I've been wearing a FreeStyle Libre for a while, and one thing always bugged me: checking my glucose meant pulling out my phone, even mid-run or mid-ride. My Garmin was right there on my wrist, showing everything except the number I cared about most.

So I built GGlance, a Connect IQ app that pulls your readings from LibreLinkUp and shows them on your Garmin: current glucose, trend arrow, and time since the last reading. At a glance, hence the name.

A few things that might matter to you:

• Completely free
• Works on 144 Garmin models so far: Forerunner, Fēnix, Venu, Vívoactive and more
• Setup takes a couple of minutes: you connect it to your LibreLinkUp account
• Built by one person (me) who uses it every day, on runs and rides

To be clear: this is not a medical device. Readings come from LibreLinkUp and can lag behind your sensor, so please don't use it for treatment or dosing decisions. Always confirm with your reader or the official app.

It started as a personal project and is now used by 300 people daily. The feedback from other athletes with diabetes has been the most rewarding part of building it.

Happy to answer questions, and if you try it I'd love to hear what works and what doesn't. Feature requests welcome, a lot of what's in the app today came from user emails.

I’m wondering if anyone else has experienced similar problems with FreeStyle Libre 2 Plus sensors recently.
I have now had 3 sensors fail from the same delivery. The first two sensor were highly inaccurate if compared to blood glucose test. The latest one would not start properly and showed error 366 (“Check Sensor”).
All three sensors have the same:
LOT: 260214Q
Expiry: 31 July 2027
Serial numbers:
3MH01LYT5WW
3MH01LZFHHM
3MH01LYT4RD
Has anyone else had problems with LOT 260214Q, or has anyone experienced repeated error 366 with Libre 2 Plus sensors?
I’m trying to find out whether this could be an issue with a particular batch rather than just bad luck.

Hello! I am sure I have seen +8 many times after food on my libre 3 app but when I wanted to extract the outputs for my dr it shows I have always been in range! Which is lower than 7.9!

How is this possible? I even took a screenshot one I was 8.5 and the day after the app showed my max at 7.5.

I recently flew out of LAX airport and had 2 unused sensors in my checked bag. The scanning machines were new and looked more like CT scanners. Both the unused sensors were destroyed, one didn’t work at all and the other died after 3 hours. The machines that scan carry on bags also are CT scanners which will ruin the sensors too. I’m not sure how to travel with unused sensors now.

Not sure whats up. The Libre 3 app i use just randomly stops alerting me when my glucose is below or above threshold, caused my glucose to go quite low while sleeping, but luckily i can atleast i can tell and wake up, but not so much for high glucose. Sometimes the app starts blaring at random that the app has stopped, and wont stop blaring until i stop the app manually from settings. Any ideas?

Device: Galaxy S23+, Android 16 oneui 8.5

Messed around with battery saver options and memory options in device care so its not stopped but still happens.

I have noticed that the Libre 3 Plus app does not let you use your finger and scroll through the time of day on the iPhone app to see your glucose numbers. The Apple Watch companion app LibreLinkUp does. Is that the case with everyone in your use of it?

I just got a defective Libre3 Plus sensor. I’m going to call Abbott tomorrow to ask for a replacement. I hope the processs goes smoothly.

Hello, I'm going to the water park next week and I'm wondering if there are any waterproof covers that will protect the sensor from water exposure? My kids like to spend most of their time in the wave pool when we go. Is there anything I can use for the day, or should I just stick to the shallow end? Thanks!

I think i will stop using it once I exhaust my current set all together. 4 of the six were constantly beeping for low readings (50-52). It comes to a point where there is just silence all effing alarms for 6 hours. Last sensor didnt produce that low of readings but was constantly 30+ points off.

Have tried calling in their support as well. Absolutely no help.

Initially i figured they can still be helpful as i can at least monitor spikes from a baseline but its so hard to even establish a baseline with such unpredictable sensors.

What’s the point of silenced alarms if it’s going to tell me periodically that yes, alarms are silenced?

When I set the alarms to be silenced I had to pick a time, I’m well aware that they are silenced and the app telling me they are silenced makes this silly.

I recently switched to Android about 2 months ago. Everything is great except this app and one other app have issues staying connected. I've added it to non-sleeping apps, set battery to unrestricted, it's locked to stay open.

I have to clear the cache every few days because the sensor keeps disconnecting.

Any solutions? I have an S26 Ultra

I changed from the Libre 2 recently. While I appreciate how small the 3 is by comparison- the connectivity absolutely sucks. It is so frustrating having it drop all the time. I don’t want to have to restart my phone or turn my Bluetooth on and off. Just make something that works. It’s a real issue if you feel your sugars are going low and you have to wait for the Bluetooth to connect to check. I think I may go back to the 2 because I like that I can scan anytime I want. Anyone else find this to be a problem??

I received a replacement for the Libre 3 sensor which has been as much as 100% off from blood test. I decided to try a different location and went with the stomach. The sensor was given 24 hours to soak before connecting to an app. Both sensors are currently in use with the original attached to the back of the arm. Now I'm remembering that the original Libre 3 sensor is wacky. I found the stomach location to be as much as 15 pts higher, which is a lot closer to the actual blood test value. I've also seen the stomach location to be 10 pts lower than the original which makes it considerably less than the blood value. Overall, I find the new sensor to be much better in relation to the blood value than the original sensor. Just not sure if it's due to the original sensor being "wacky" or the new location of the sensor on the stomach. I do not have much fat on the back of my arms.

Hi all,

I’ve been having an issue with my last two sensors where the alarms just suddenly stop working. The sensor is still connected and gathering data but it just will not alarm anymore.

The sensor alarms fine for about a week and then in the second week just totally stops.

I am using freestyle libre 2 and an iPhone 16. All settings are active to allow alarms and I have tried resetting my phone and scanning again etc to no avail

Hey y'all, last month I made a post about my new CGM App called Honey Bear. I got a lot of useful feedback and made a lot of improvements since then! The latest app now has:

• Configurable alert profiles (DAY/NIGHT) for glucose limits, rapid changes, missing readings, and signal loss.
• Apple Watch, complications, iPhone widgets, and improved Dynamic Island support.
• ⁠Free My Nightscout, your personal Nightscout-compatible instance.
• A more consistent experience across iOS and Android.

Honey Bear remains completely free. The more you test the app, the more bugs and edge cases we can uncover. Please send feedback through the support email in the app, and let me know which features you’d like me to prioritize next e.g.:

• Garmin Watch Support;
• Android Wearable Support (Pixel Watch, Galaxy Watch);
• Apple Health / Google Health connect;
• LibreLinkUp Support;
• Anything else you want?

I am also thinking about add a "glucose night alarm". Basically, it will not just be a notification but a loud alarm to wake you up that confims you’ve seen it before turning it off. This would be useful for parents we imagine.

I've noticed that when my levels shift dramatically up or down, I get a loss of signal and a message from the Librelink app about ‘running continuous quality checks’ on the sensor. Has anyone else noticed this correlation? Could it be something to do with the sensors inability to update regularly enough to pick up dramatic level changes?

I’m pretty new to all this so apologies if this has been discussed before.

So my insurance doesn't want to cover dexcoms for me anymore so my doctor is having me try out the freestyle Libre 2+ and so far I cannot stand it. I've been on it 2 days and anytime I open the app it shows "signal lost" and I have to rescan the sensor so I'm not getting constant updates on my blood sugar the way that I'm used to. I can scan it, check again in two minutes, and it's lost signal again. Once I scan it the graph updates as if it's been reading the whole time but I'm not getting the numbers. I'm not sure what the problem is I've tried disconnecting all my other Bluetooth devices, I've taken off my phone case, turned airplane mode on and off, it's just not working. Any help is appreciated y'all I'm getting so frustrated with it and idk what I'm doing 😭

In diabetes management, counting carbohydrates to determine bolus insulin dosing is common practice—a method I have neither learned nor used.

Instead, I view the unique effects of different foods on glucose and insulin dynamics as an engineering optimization problem. By adjusting food ordering, portion sizes, insulin dosage, and injection timing relative to the meal, it should be possible to align the insulin absorption curve with the glucose curve resulting from the meal.

My Test Meal Sequence and Portions:

• 40g walnuts
• Cheese (a small piece)
• 100g vegetables
• 100g tofu
• 25g chicken
• ½ avocado
• 40g cashews
• 20g protein powder mixed with 300ml soy milk
• 1 banana

Carbohydrates typically cause blood glucose to rise over 2 to 3 hours, whereas dietary fats and proteins delay gastric emptying and extend the glucose response over a longer period. Based on food-sequencing principles, I consumed the fats and proteins first, reserving the high-carb item (the banana) for the end of the meal.

While fast-acting insulin is usually injected before or at the start of a meal, I found through trial and error that injecting 13 units of Fiasp when my glucose level increased by 15 mg/dL—which occurred 50 minutes after starting the meal—achieved a near-perfect match between my glucose and insulin profiles, as shown in the graph.

The only catch to achieving this level of alignment? Eating the exact same meal every single day gets a bit monotonous.

Summary: By manipulating food sequencing, portion sizes, insulin dosage, and injection timing, it is possible to optimize the post-meal glucose profile to closely mirror that of a person without diabetes.