Dexcom ONE+ vs Libre 2 & Libre 2+

TheSecretCarbAddict

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Staff Member
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Messages
265
Type of diabetes
Type 2
Treatment type
Tablets (oral)
I have finally pulled together a comparison of Dexcom ONE+ vs Libre 2 and Libre 2+ with some glucometer tests thrown in. See the attached image.

2024-07-08-DexcomONE+VsLibre2And2+.jpg

Key observations:

- Libre 2 seems to run a bit higher than Dexcom ONE+
- Libre 2+ is quite close to Dexcom ONE+ especially after the first 24 hours of wear
- I did do a few Dexcom ONE+ calibrations over 10 days, but generally the sensor seemed to cope well at differnt levels of BG

What I like about ONE+:

- Calibration is quite a neat feature
- While Libre sends readings to the phone every minute instead of every five, it rolls historical data into 15min blocks. ONE+ keeps it at 5min granularity
- It seems that Libre is trying to predict where your BG is heading but keeps changing its mind often. With ONE+ you seem to get your BG estimate and that's it
- Smaller size than Libre 2 or 2+
- Per-day price point on 3-month subscription

What I'm undecided about:

- Splitting apps for current readings and data analysis - ONE+ app and Clarity app. On one hand it keeps things simple and clean for day to day use, but I like how LibreLink combines everything in one app.
- Clarity app provides similar insights to LibreLink / LibreView, but most of these come as downloadable PDF rather than native app functionality.
- Additional sticky tape to keep sensor in place - made right mess of applying it without much additional benefit.

Given I self-fund and the per-day price difference between Libre 2+ and Dexcom ONE+ I'm likely to switch when I'm done with my current stock of Libre sensors.

Shout if you have any questions around this comparison!
 

barrym

Well-Known Member
Messages
813
Type of diabetes
LADA
Treatment type
Insulin
I’m just in the middle of a comparison, One+ v L2. Running both at the same time (different arms).

I agree with your observations largely.

i find the One+ about .2 lower at 5, and probably as much as 2.5 at 10+. Always lower though so far, so that’s good.

I quite like the app for the One+, except for the adding of data. Loads more clicks. One entry for carbs, one for insulin (sepera one for basal), one for a note if you want to record where the carbs came from, one for exercise. Just one form on LV. But I’m sure I’ll get used to it.

I love the click & drag on the graph, and the rotated screen, to drill into the detail.

I’m sufficiently impressed that I’m extending my evaluation for 3 months (not both though) to see if it becomes second nature, and hopefully shows consistency at change of sensor which I found wanting on L2.

My endo said she preferred the LV reports to Clarity, but that may have been just for the One not plus. I can’t see much difference. Except that is the download export. That arrives as a very formatted tabular form, very readable. One single record format despite the data content. Should be good for hand cranking if ever necessary.

I’m sure there will be more pros and cons.
 

TheSecretCarbAddict

Moderator
Staff Member
Moderator
Messages
265
Type of diabetes
Type 2
Treatment type
Tablets (oral)
I’m just in the middle of a comparison, One+ v L2. Running both at the same time (different arms).

I should have mentioned that I wore all the sensors on the same arm while testing. I timed it so that I got end of my Libre 2 and beginning of Libre 2+ roughly in the middle of 10 days of ONE+.
 

Taighnamona

Active Member
Messages
26
Type of diabetes
Type 2
Treatment type
Insulin
I have finally pulled together a comparison of Dexcom ONE+ vs Libre 2 and Libre 2+ with some glucometer tests thrown in. See the attached image.

View attachment 68668

Key observations:

- Libre 2 seems to run a bit higher than Dexcom ONE+
- Libre 2+ is quite close to Dexcom ONE+ especially after the first 24 hours of wear
- I did do a few Dexcom ONE+ calibrations over 10 days, but generally the sensor seemed to cope well at differnt levels of BG

What I like about ONE+:

- Calibration is quite a neat feature
- While Libre sends readings to the phone every minute instead of every five, it rolls historical data into 15min blocks. ONE+ keeps it at 5min granularity
- It seems that Libre is trying to predict where your BG is heading but keeps changing its mind often. With ONE+ you seem to get your BG estimate and that's it
- Smaller size than Libre 2 or 2+
- Per-day price point on 3-month subscription

What I'm undecided about:

- Splitting apps for current readings and data analysis - ONE+ app and Clarity app. On one hand it keeps things simple and clean for day to day use, but I like how LibreLink combines everything in one app.
- Clarity app provides similar insights to LibreLink / LibreView, but most of these come as downloadable PDF rather than native app functionality.
- Additional sticky tape to keep sensor in place - made right mess of applying it without much additional benefit.

Given I self-fund and the per-day price difference between Libre 2+ and Dexcom ONE+ I'm likely to switch when I'm done with my current stock of Libre sensors.

Shout if you have any questions around this comparison!
I self funded Libre 2 for 3 months and it was invaluable for helping me with glucose trends and responses to foods but I found it to be somewhat inaccurate at low and very high levels.
After a free trial of Dexcom 1, I was impressed with its accuracy but discounted it because the transmitters only lasted three months and that didn’t suit the use one skip a few weeks way to save money that I wanted to go.
So a few months down the line and the integral dexcom1+ is released. 24 days in to using the Dexcom 1+ and I’m very impressed with its accuracy, the ability to calibrate and although the app is not slick it is functional. An added bonus is that it connects to my Iwatch without needing a third party app.
The ability to purchase three months at a discount is also a factor.
 
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barrym

Well-Known Member
Messages
813
Type of diabetes
LADA
Treatment type
Insulin
I self funded Libre 2 for 3 months and it was invaluable for helping me with glucose trends and responses to foods but I found it to be somewhat inaccurate at low and very high levels.
After a free trial of Dexcom 1, I was impressed with its accuracy but discounted it because the transmitters only lasted three months and that didn’t suit the use one skip a few weeks way to save money that I wanted to go.
So a few months down the line and the integral dexcom1+ is released. 24 days in to using the Dexcom 1+ and I’m very impressed with its accuracy, the ability to calibrate and although the app is not slick it is functional. An added bonus is that it connects to my Iwatch without needing a third party app.
The ability to purchase three months at a discount is also a factor.
When do you calibrate? Just once at the start or regularly? And is it worth doing? Also, what guarantee is there that your BG meter is correct and not at one extreme to the MARD range. And not variable over the range?

The guy who wrote Juggluco has a bit in his docs about why he hasn’t put the facility in his app.
 

_Steve_

Well-Known Member
Messages
54
Type of diabetes
Type 2
Treatment type
Diet only
Dislikes
Carbs >:[
Now the ONE+ is out and cheaper than running Libre2. I will be switching, last week I had a Libre2 sensor give very inaccurate readings.. for example, finger prick tests were around 5 and the Libre2 sensor was 9+ and erratic. (after 2 days of wearing, +12hrs before activating)

Applied same as usual, not loose and to the back of the arm. I then contacted Abbott.. They had me fill out a form and eventually told me that because I had bought it from Amazon I need to speak to Amazon support (they wouldn't replace it) and to buy future sensors from Abbott. Spoke to Amazon and they wouldn't refund in a used condition. So I'm £55 out as I self fund.

Not impressed with the support to be honest, especially since when a sensor failed to start/scan previously they've replaced it without question (that was from Amazon too)

The Dexcom ONE+ subscription at £79.00/Month is very appealing. I assume there's patches that can be purchased to go over the sensor like the Libre2?

Would anyone mind showing what the Dexcom apps look like? I do like LibreLink and find the LibreView website very good for analysis.
 

barrym

Well-Known Member
Messages
813
Type of diabetes
LADA
Treatment type
Insulin
Now the ONE+ is out and cheaper than running Libre2. I will be switching, last week I had a Libre2 sensor give very inaccurate readings.. for example, finger prick tests were around 5 and the Libre2 sensor was 9+ and erratic. (after 2 days of wearing, +12hrs before activating)

Applied same as usual, not loose and to the back of the arm. I then contacted Abbott.. They had me fill out a form and eventually told me that because I had bought it from Amazon I need to speak to Amazon support (they wouldn't replace it) and to buy future sensors from Abbott. Spoke to Amazon and they wouldn't refund in a used condition. So I'm £55 out as I self fund.

Not impressed with the support to be honest, especially since when a sensor failed to start/scan previously they've replaced it without question (that was from Amazon too)

The Dexcom ONE+ subscription at £79.00/Month is very appealing. I assume there's patches that can be purchased to go over the sensor like the Libre2?

Would anyone mind showing what the Dexcom apps look like? I do like LibreLink and find the LibreView website very good for analysis.
Just download it and take a look. Obviously some things won’t show but you’ll get a good idea.
 

Beating-My-Betes

Well-Known Member
Messages
606
Tempted to grab a one-off CGM. Am I right in thinking I only need to buy the Dexcom ONE+ sensor, and everything else is done with free apps? Do I need waterproof coverings etc? Best placement?

Thinking of ordering tonight or tomorrow.

Thanks in advance!
 

Taighnamona

Active Member
Messages
26
Type of diabetes
Type 2
Treatment type
Insulin
When do you calibrate? Just once at the start or regularly? And is it worth doing? Also, what guarantee is there that your BG meter is correct and not at one extreme to the MARD range. And not variable over the range?

The guy who wrote Juggluco has a bit in his docs about why he hasn’t put the facility in his app.
I calibrated within the first 12 hours and it went haywire. I’ve since read elsewhere on this forum not to do that within the first 24 hours. The sensor settled down thereafter and ran very accurately. I’m now on my third sensor and haven’t needed to calibrate since as it’s been uncannily accurate. I use a Tee2 monitor and found it to be fairly reliable.
I still do two fingerpicks daily and use the CGM for guidance on how well I’m doing managing carbs. I’m lucky I’m fairly stable and don’t have severe lows and extreme highs. I could probably manage without the CGM but it’s helpful overall.
 
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Taighnamona

Active Member
Messages
26
Type of diabetes
Type 2
Treatment type
Insulin
Tempted to grab a one-off CGM. Am I right in thinking I only need to buy the Dexcom ONE+ sensor, and everything else is done with free apps? Do I need waterproof coverings etc? Best placement?

Thinking of ordering tonight or tomorrow.

Thanks in advance!
The ONE+ lasts for 10 days plus 12 bonus hours. Each sensor is complete. It comes with an extra ugly white adhesive. Mine has stayed on without it. The instructions are easy to follow for pairing with your phone. The pairing code is in the applicator. I’ve heard some reports that some androids aren’t compatible. There’s a list of compatible phones on its website. Two apps to download, one for daily use and Clarity for reports.
I’ve only tried placing them on the back of my arm.
 

TheSecretCarbAddict

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Staff Member
Moderator
Messages
265
Type of diabetes
Type 2
Treatment type
Tablets (oral)
Tempted to grab a one-off CGM. Am I right in thinking I only need to buy the Dexcom ONE+ sensor, and everything else is done with free apps? Do I need waterproof coverings etc? Best placement?

Thinking of ordering tonight or tomorrow.

Thanks in advance!
ONE+ is all in one sensor and works with your mobile phone. Do check app compatibility though especially if you are using Android (https://www.dexcom.com/en-gb/compatibility/d1g7). The box is almost half the size of Libre 2 and comes with sensor inside applicator, an additional adhesive patch (optional) and instruction leaflet. I've only worn it on my arm alongside Libre 2 for testing, but it is officially on some other parts of the body like your tummy.
 
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Beating-My-Betes

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Messages
606
The ONE+ lasts for 10 days plus 12 bonus hours. Each sensor is complete. It comes with an extra ugly white adhesive. Mine has stayed on without it. The instructions are easy to follow for pairing with your phone. The pairing code is in the applicator. I’ve heard some reports that some androids aren’t compatible. There’s a list of compatible phones on its website. Two apps to download, one for daily use and Clarity for reports.
I’ve only tried placing them on the back of my arm.
Thanks for the quick and thorough response. Just checked and my iPhone is compatible. Is it possible to use clingfilm around the arm and sensor while showering?
 

Beating-My-Betes

Well-Known Member
Messages
606
ONE+ is all in one sensor and works with your mobile phone. Do check app compatibility though especially if you are using Android (https://www.dexcom.com/en-gb/compatibility/d1g7). The box is almost half the size of Libre 2 and comes with sensor inside applicator, an additional adhesive patch (optional) and instruction leaflet. I've only worn it on my arm alongside Libre 2 for testing, but it is officially on some other parts of the body like your tummy.
Many thanks!

I seem to be compatible with my 2020 iPhone SE.
 

TheSecretCarbAddict

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265
Type of diabetes
Type 2
Treatment type
Tablets (oral)
Thanks for the quick and thorough response. Just checked and my iPhone is compatible. Is it possible to use clingfilm around the arm and sensor while showering?
I found I managed just fine with 10 days of daily showers with no additional cover... the adhesive on my sensor was really good without using the additional patch. The sensor is relatively small and stays out of the way, but I imagine you could use some cling film over it for protection if you wanted.
 
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Beating-My-Betes

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606
I found I managed just fine with 10 days of daily showers with no additional cover... the adhesive on my sensor was really good without using the additional patch. The sensor is relatively small and stays out of the way, but I imagine you could use some cling film over it for protection if you wanted.
Thanks! I could try and avoid showering that part of the arm for 10 days. But a bit of clingfilm wrap would just make it easier. Unless such a thing would be contraindicated with regard to the functioning of the sensor, I'd rather take the extra precaution.
 

TheSecretCarbAddict

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Messages
265
Type of diabetes
Type 2
Treatment type
Tablets (oral)
Thanks! I could try and avoid showering that part of the arm for 10 days. But a bit of clingfilm wrap would just make it easier. Unless such a thing would be contraindicated with regard to the functioning of the sensor, I'd rather take the extra precaution.
I don't think it would affect sensor in any way as long as you don't wrap it too tight causing a compression low. Over the years I've used all sorts of coverings with my Libre sensors, sticky plasters, sports tape, etc. all with no problems. The ONE+ data sheet I've seen states that ONE+ is not only water resistant, but waterproof (The Dexcom ONE+ Sensor is waterproof and may be submerged under 2.4 meters of water for up to 24 hours without failure when properly installed.)
 
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