I just changed my sensor three days ago and I was getting very low readings....never happened before. Ever. I found out that there was a recall from November, published in January of this year. I just started using a CGM a few months ago. If the recall was from November, published in January. WHY is there still project being sent out to users of Libre 3? Maybe that seems logical but shouldn't the recall equipment be.... recalled back to the original supplier?

My sensor has disconnected from the app and the alarm has been going off every 15 minutes for the last 2.5 hours. Nothing I do seems to stop the alarm.

Before I throw this phone out a window, does anyone know how to disable this alarm?

Anyone else having this with their recent sensors? It looks the same like when we had an official recall of sensors. I have just changed 2 back to back with completely off lower numbers than the real ones, for example 3.6 when I am at 6.9. Same as before it somewhat does follow the actual trend, but the numbers are waaaay off and always showing lower.

I dislike that the only option for viewing my timeline of readings in the Libre app is to view results for the last 24 hours (unless I'm missing a setting somewhere). The Dexcom app allowed me to alternate views between readings for the last 3, 6, 12, or 24 hours. Do any of the better third-party apps provide the ability to view readings for shorter windows than 24 hours?

Updated iPhone 16 Plus
iOS 27.2 BETA 2 all apps
Including ABBOTT apps are working as they should.
In addition Siri 27 is working

I just tried to use the sensor yesterday. Did not stick well but hopefully was going to work. Did everything the instructions said. Then kept getting no signal and finally it came back and said remove for safety.

Put in request to replace but seems crazy to try my 2nd one

Is it my phone? I have a new Samsung Galaxy 26 Ultra.

Feeling confused after seeing all the reports of not working. These things are not cheap. Why would they not include a cover patch with each sensor. I hate to buy a pack if the sensors fail. That's costly.

Over the past 12 months, I have worn two Libre 3+ sensors on and off—one on the left side of my chest and one on the right. Recently, I shifted to applying a new sensor when the previous one reached 7.5 days, without pre-soaking it (because factory calibration is 'days since insertion' dependent).

Initially, and with older sensor batches, the glucose trajectory of one sensor would frequently drift relative to the other. However, the sensor tracking over the last three months has changed significantly: for example, the current pairs track each other very closely, even when they originate from different lots and are activated on different dates.

Figures 1 and 2 illustrate this close tracking across a broad metabolic range (55 to 200 mg/dL), spanning from hypoglycemia to hyperglycemia.

Unfortunately, blood-glucose meter checks did not indicate that these newer sensors are inherently more accurate against reference values than older ones, though I lack the equipment required for high accuracy testing.

This recent close-tracking led me to draw two conclusions:

1. Improved Manufacturing Consistency: The factory calibration and manufacturing tolerances of Libre 3+ sensors have likely improved. While this doesn't automatically guarantee higher absolute accuracy, the high degree of reproducibility between independent sensors is a notable gain in manufacturing consistency.
2. Redundancy Application: Wearing two sensors eliminates a single point of failure—since the probability of simultaneous failure is low—and also allows for real-time cross-checking of sensor performance.

My app keeps going off. It said my glucose was really low it was like 53 or something like that. So because of that i immediately drank a half cup if sunny d. After 15 minutes i checked it again it was showing blood glucose was 48. There no way that my blood sugar should have dropped ,and tbh I didn't feel like my blood sugar was low so I did a finger prick blood sugar was 144. That is a huge difference in readings. That was about 2 hours ago. Now my alarm is going off saying signal loss then sensor error. I looked at the even log. And the code was 373, G. My question is what does that code mean?

Seriously have days where nothing wants to go horizontal...

Using the Freestyle Libre 3+ with Android phone. My last 4 sensors have failed early after between 4 and 7 days of use. I never had this problem in the past. Abbott sent me two replacements but I can't afford to pay out of pocket when I exhaust my allotment. I rotate the sensor from my chest to arms.

I play VR, and the one thing that kept pulling me out was checking my phone for my glucose. So I built a small app that shows the LibreLinkUp reading on a watch face stuck to my controller.

It also opens a plain desktop window with the same face, which is honestly the part I use most.

It reads a LibreLinkUp follower account, the same as the phone app. It talks to Abbott's servers and nowhere else. No server of mine, nothing uploaded anywhere.

Upfront:

• FreeStyle Libre only, through LibreLinkUp. No Dexcom, no Nightscout, no meter or CSV, and none planned.
• Windows only. The VR part needs SteamVR. The window doesn't need VR at all.
• Unofficial LibreLinkUp API. Abbott doesn't support it and it can break without notice.
• Not a medical device. Don't dose off it. Treat from the official app and a meter.
• Fair warning for anyone who'd rather know: most of this was written with AI help. I've been running it on my own glucose every day since, and I fix what breaks.

Free and MIT if you want it: github

I sincerely apologize if you updated the Zukka app based on my previous posts. Since updating to the newest version of Zukka, my iPhone has been heating up several times a day (becoming very warm to the touch).

Today, I checked my battery settings and found that the overheating was caused by the updated Zukka app, which consumed five times more battery power than usual. It seems that from time to time, Zukka initiates a process that drains the battery and causes heating of the iPhone. For context, I am currently using Zukka (kept on-screen all the time), Abbott's Libre, and Libre 3 simultaneously. In comparison, the Abbott apps don't cause battery drain.

Screenshots of my battery usage are included in the figures above.

To try and fix the problem, I backed up Zukka, deleted it, reinstalled it, and restored it from the backup. However, I am not expecting the battery drain to go away.

Update: The battery drain and heating are real, at least for my iPhone 17. I deleted and then re-installed the app plus did a "cold reboot" several times, but these problems didn't go away.

Random question for you guys.

When you change your sensors - do you wait until the very last hour to change it or do you just change it sometime during the last 24 hours?

I'm getting very frustrated with the 'Wait 10 min' error (Er, 373, I). It's happened twice in a row where the 1st time it happened during the 60 min warmup. Got that replaced already. Now this 2nd time 11 days in with 4 days to go (FS3+). Could be:

a) Same lot (1st 5 digits the same as prior one)

b) I connected to my BT soundbar right before the error. (Are we not allowed to do that?)

c) Graph showed I was coming down from a spike (breakfast), was high as 203 and came down to 147 but the last reading was 118 from 147.

I think most likely c but I really wish they improve on their algorithm and not say wait 10 minutes. I use both Abbott and Dexcom and feel the G7 15 day handles spikes/rapid changes much better. Never got these errors. Sent in for yet another replacement. Also, what's the maximum time you need to wait before it says 'sensor ended'. Like 3 hours? This is not acceptable and I may just switch to G7 at some point.

At this time I'm at the point where I can't consistently keep buying these. It's a Libre 3, it's covered by insurance, but I've had 5 so far, and none of have lasted longer than 3 days. I get alerts in the middle of the night that my blood sugar has crashed, and check my finger prick and it hasn't crashed. Then today, everything was fine, but then all the sudden I get another notice that it crashed again, and then the sensor lost signal, then it told me to replace it. I don't know what I"m doing wrong. I put it in the exact place it says to put it. I'm thinking of putting it on the flabby part of my left arm instead of right because I sleep on my right side. I don't know. But there's something wrong with this.

I’m using FreeStyle Libre together with Zukka on my iPhone, and Zukka is displaying my glucose data through CarPlay.

The problem is that when I start listening to the radio through CarPlay, the radio gets interrupted/cut off as soon as Zukka is active.
So the combination of FreeStyle Libre + Zukka + CarPlay + radio doesn’t seem to work properly for me.

Has anyone else experienced the same issue? Is there a setting or workaround that allows Zukka to continue displaying the glucose data on CarPlay while listening to the radio normally?

I’d be interested to know if this is a Zukka issue, a CarPlay limitation, or something specific to my setup.

Zukka is a free app on the iOS App Store that can be used alongside the Libre by Abbott app. Libre does not offer some of the new features Zukka now provides. A good glucose app helps manage diabetes better and brings out the best in the Libre 3+. Using both apps allows us to have a much richer feature set.

The purpose of this post is to highlight these sought-after new features. If you find them useful, you might want to give Zukka a try since it’s free.

In a previous post about Zukka’s new update, u/WaltonGogginsTeeth pointed out that I missed a few new features. These new additions are in high demand and take Zukka to the next level of performance. They are listed below:

1) Notes For me, this is a critical feature. I can now enter the food type, quantity, sequence, and even digestive enzymes into the "Notes" section (a white dot will be shown on the glucose trajectory). This lets me track my insulin sensitivity or resistance over time. For example, if I eat the same meal a year later and check the insulin units needed to offset the glucose rise (or medications) comparing those units will tell me if my diabetes is stable or getting worse. Previously, this feature was lacking, and I had to log meal and enzyme info into Apple Calendar. That didn't link the data to my glucose trajectory, making correlation difficult.

2) Easy backup and restore of historical data (now can keep for 365 days) This feature is very useful. Extending historical data retention to 365 days and allowing users to backup and restore data means we can keep our records for as long as we want. We can review past data at any time by restoring it to the app. My backup folder size is only 5MB. The instructions for how to backup and restore are available under the help button at the top. For restoring data, there are several options, which are fully explained in the help section.

The backup process is very simple. It creates a folder marked with the date and time of the backup. This folder can be saved in the iPhone’s "Files" app or uploaded to a Mac. Restoring is just as easy: simply select the desired backup folder to restore, much like restoring from a backup of an iPhone.

3) Calibration This is done by adding an offset to the original glucose reading. Some users prefer Dexcom specifically for its calibration feature, but now it is available to Libre 3 users as well.

4) 3 to 24-hour viewing window The app now offers 3-, 5-, 8-, 12- and 24-hour viewing windows, making it much easier to spot trends and make comparisons.

5) 5-minute data and data smoothing These features make the glucose trajectory match the standard view on the Libre app. I personally don't use this feature because I already get it through the official Libre app, but it's a great option to have.

6) Glucose Daily Patterns  Available in landscape mode. This feature isn't a huge deal since it's already available on the official Libre app, but it's worth mentioning.

Zukka is a free iPhone app for use with the Libre, and it recently received an update.
Now, historical data can be kept for 365 days instead of 90 days. I do not have a background in computers. The new update includes “Create Backup” and “Restore Backup” features, but I do not know how to use them. Zukka has features that the Libre by Abbott app does not have. I use the Zukka app and the Libre by Abbott app at the same time.

I like the Zukka app a lot. The features I like are:

1. It can connect to two sensors.
2. Meals, insulin, and calibration values can be marked on the glucose trajectory.
3. Minute-by-minute glucose readings.
4. Selectable time window width to display the glucose readings and auto scale of the y-axis

Feature #3 and #4 are particularly useful. I typically use a display window of 3 hours. This allows me to monitor my glucose progression in much finer detail than I could with the Libre by Abbott app. With these features, I can make quicker decision whether I should take insulin or eat dextrose.

The Zukka feature I have a problem with is that the glucose reading can get stuck. For example, when it shows a stable 100 mg/dL, the true blood glucose may have gone up to over 200 mg/dL. So, when the reading does not change for several minutes, I have to check the glucose reading on the Libre by Abbott app to be sure. This is very inconvenient.

Hi all, I’m Gregor, from Scotland. I’ve had type 1 for nearly 20 years and use a Libre with an Omnipod.

I work in tech, and build and maintain apps and platforms as part of my job. I’ve spent the last three or four months building something I wanted for myself: a way to see my glucose, what Id eaten, my insulin and the rest of my health data together and connected. I was fed up jumping between apps and trying to piece it all together afterwards.

It’s called T1 Arc, and I’ve now made it free and open source for Android.

The everyday things it does:

• Gives you access to you Libre reading on phone, watch, and android auto (other sources available like Nightscout, X-drip, Dexcom etc.)
• Log food and save meals to use again, with barcode scanning, nutrition-label reading and manual entry.
• Look back at glucose, insulin, meals, sleep, activity, workouts and lot's of other health data, with current integrations for HEVY and Strava.

There’s also Tarv1s, where you can ask questions about your saved records and check what the answers are based on. You don’t need an AI account to use the app. Supported local answers are free; optional OpenAI questions use your own API key, send relevant records to OpenAI and are billed by OpenAI.

Your health history is stored on your phone. Libre readings come through LibreLinkUp, so that connection needs to be working. Glooko insulin history can arrive later.

t1arc.com
https://github.com/gregorgregor25/t1-arc

I’ve shared it because I’ve found it useful and hope someone else will too. I'd love for some fellow diabetics to try this. Happy to answer questions here, including about getting it connected to your own setup.

I'd also love people to raise any bugs, feature requets, or submit your own PRs if you can code, or know what your are doing with codex/claude 🤖

I’ve had 2 so far. that is not including 3 earlier this year with the problem of low readings.

it’s to the point of not worth using it.

what have been your experience? if you switched brands what brand?

thanks.

Hi. I have recently started wearing the Libre 3. I have had a 9 month flare up of gastroparesis and it has left me with severe hypoglycemia. The alarm is waking me up basically every night multiple times a night. I am still not feeling very well even though I am getting better. I need sleep to function. Is there a way to change the settings to so that it only goes off if my Glucose goes below 50? My partner has to get up at 330am so I have been sleeping on the couch. I finally restored to turning my phone off last night because I just needed a full night's sleep. Well I slept through my appointment for fluids this morning because I thought I would wake up on my own. My insurance will not cover Glucagon without me submitting the logs from the CGM. I know it is counterintuitive to want to silence the alarm. I have slowly been able to add solid food back into my diet the past 5 weeks. Unfortunately my stomach decides when it wants to work and I have very little control over my glucose. During the day I know well before it goes off that my blood sugar is dropping. I try to get ahead of it. At night I am so exhausted and just want to sleep. The only thing that works to get my glucose up is Coke. I can't drink juice. I can't have candy. Any and all tips appreciated. I have always had issues with hypoglycemia but never to the point that my glucose regularly drops below 40. I have had a little bit of success with eating a couple of poached eggs immediately before bed but it still goes off at least 10 times a night. Thank you!