- Continuous glucose monitors and CGM apps side by side
- Ten CGM makers, sensors and apps
- Three different things sold under the CGM name
- Sensors from makers writing for people with diabetes
- Pumps, meters and the CGM sensor
- Biosensors sold with an app
- Apps and coaching that work with your own sensor
- Questions to take to the maker's site, and to your care team
- My advice on choosing a CGM
- Frequently asked questions
The best continuous glucose monitor starts with what you want it for: a sensor made for diabetes care, a wellness biosensor with an app, or an app and coaching that run on a sensor. A CGM is a health device, so your doctor or diabetes care team decides which device fits you.
Search for a continuous glucose monitor and the results mix three kinds of product under one name. Some are sensors from makers whose pages are written for people living with diabetes. Some are biosensors sold with an app for people curious about their glucose. And some aren't sensors at all, but apps and coaching programs that work with one.
This list covers ten names, using only what each maker's own site says, read on 2 Nov 2026 (as of Nov 2026). It's alphabetical and in no particular order. There's nothing here about accuracy, comfort or results, and nothing that's medical advice: it's a map of what each company makes, so you know what to ask about.
Continuous glucose monitors and CGM apps side by side
| Tool | Type | Good for |
|---|---|---|
| Biolinq | Glucose sensor without a needle | A glucose sensor with no hypodermic needle |
| Dexcom | Real-time CGM systems | Real-time readings to a phone or receiver |
| Eversense | Under-the-skin CGM sensor | A sensor worn under the skin |
| FreeStyle Libre | CGM system family | A range of sensors with a comparison page |
| Levels | Metabolic health app | Seeing how food affects you |
| Lingo | Wellness biosensor and app | A biosensor with a phone app |
| MiniMed | Insulin pumps that use CGM sensors | Insulin pumps that connect to CGM sensors |
| Nutrisense | CGM program with coaching | Glucose data with dietitian coaching |
| Sinocare | Glucose meter maker | Blood glucose meters, with iCan CGM news |
| Stelo | Wearable glucose biosensor | A wearable biosensor with nutrition coaching |
Ten CGM makers, sensors and apps
Biolinq
Best for: Wearing a glucose sensor with no hypodermic needle for insertion that also tracks activity and sleep, with an LED light that shows your range.
Dexcom
Best for: Real-time CGM systems that send automatic readings to your smart device or a receiver, from a page written for people living with diabetes.
Eversense
Best for: Those who want a sensor designed to rest under the skin, with a removable smart transmitter that can be taken off and put back on.
FreeStyle Libre
Best for: The Libre 3 and Libre 2 sensors, with a page that compares CGM systems and a list of compatible insulin pumps.
Levels
Best for: An app for seeing how food affects your health, with your own CGM or one you get through the company, plus labs and biomarkers.
Lingo
Best for: Streaming glucose data to your phone from a biosensor its maker calls a continuous glucose monitor made by Abbott.
MiniMed
Best for: Insulin pumps and a smart pen, including the 780G system, which works with connected CGM sensors, and a page to compare CGMs.
Nutrisense
Best for: Pairing glucose data with coaching, including video calls with a dietitian, through an app you can use with your current CGM.
Sinocare
Best for: A maker of blood glucose and uric acid meters whose site also carries news items on its iCan CGM.
Stelo
Best for: Tracking glucose with a wearable biosensor, titled a no prescription CGM on its page, with 1:1 nutrition coaching.
Three different things sold under the CGM name
Here's what a searcher wouldn't guess. 'CGM' covers three different things: sensors made for diabetes care, wellness biosensors with an app, and apps or coaching that run on a sensor you already have. So the useful first question is which of those you're looking for.
The makers' own words show the split. Dexcom describes 'real-time Continuous Glucose Monitoring (rtCGM) systems' that send readings to a smart device or receiver. One wellness biosensor's page is titled 'No prescription CGM', and another maker says its biosensor 'is a continuous glucose monitor (CGM) made by Abbott'. Two app makers say you can use their app with your own CGM.
- Sensors for diabetes care: CGM systems from makers whose pages are written for people living with diabetes.
- Wellness biosensors with an app: glucose biosensors sold with an app that shows how food and exercise affect your glucose.
- Apps and coaching on a sensor: programs that read glucose data from a CGM and add an app, labs or coaching.
Sensors from makers writing for people with diabetes
The first group is made for diabetes care, and the pages say so. One maker's home page says that whatever type of diabetes you're living with, it has a system for you, and its CGM systems send automatic real-time readings to your smart device or a receiver. Its page also says it's retiring its G6 model and asks G6 users to move to the G7.
The FreeStyle Libre site lists the Libre 3 and Libre 2, a Libre 3 for kids, its apps, a page of compatible insulin pumps, and pages titled 'Is CGM for You?' and 'CGM Vs Blood Glucose Monitoring'. Its Compare CGM Systems page is a sensible place to read about the models side by side.
One maker on this list takes a different shape. Its sensor is 'designed to rest comfortably under your skin', and its page says the removable smart transmitter can be taken off and put back on without wasting a CGM.
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Pumps, meters and the CGM sensor
Two names here sit next to CGMs rather than being CGM sensor makers. One is an insulin pump maker: its menu lists the Flex, 780G and Go systems, a smart pen, infusion sets, and pages to compare pumps and compare CGMs, and its 780G system works with connected CGM sensors. If you use a pump, it's worth reading which sensors a pump works with, and the Libre site's compatible insulin pumps page covers the same question from the sensor side.
The other is a maker of blood glucose and uric acid meters, with blood pressure and multiparameter testing products too. Its site carries news items about its iCan CGM. That's all its page says about CGMs, so read the news items for the detail.
Biosensors sold with an app
The second group is sold as wellness products. One is titled 'Stelo Wearable Glucose Biosensor' on its page, and it offers 24/7 insights into how food, exercise, stress and sleep affect your glucose, with 1:1 nutrition coaching. Another is a biosensor its maker says is a CGM made by Abbott, with an app that streams glucose data to your phone so you can see how it reacts to food and exercise. That page also states that it doesn't provide nutritional advice.
One sensor here works a little differently. Biolinq says its sensor has no hypodermic needle for insertion and brings glucose, activity and sleep information together in a single device. A simple LED light shows your glucose range, even without a phone: blue means you're in target range, and yellow means above range. A mobile app adds trends over time.
Apps and coaching that work with your own sensor
The third group doesn't make the sensor. One app's page is titled 'See how food affects your health', and it says you can use it with your own CGM or get one through the company. It adds meal logging, macro tracking, and labs and biomarkers.
Nutrisense runs a CGM program built on coaching and glucose data, with video calls with a specialized dietitian and stress management sessions with a stress expert. It also has a Bring Your Own Sensor option: use its app with your current CGM. If you already wear a sensor, these two are where to look for an app or coaching without a new device.
Questions to take to the maker's site, and to your care team
- Is the page written for people living with diabetes, or for general wellness?
- Do readings go to a phone, a receiver, or a light on the sensor?
- Is the sensor worn on the skin, or under it?
- Do I use an insulin pump, and which sensors does it work with?
- Do I already wear a CGM that an app could read from?
- Do I want coaching, such as video calls with a dietitian?
- What does my doctor or diabetes care team say about the device?
Do you make a continuous glucose monitor? Tool makers can ask to be considered for a featured place on this list.
My advice on choosing a CGM
Work out which of the three groups you're in before you compare names. If you're managing diabetes, the sensors from makers writing for people with diabetes are where to start, and the conversation with your care team comes first. If you're curious about how food and exercise show up in your glucose, read the biosensor pages. And if you already wear a sensor, look at the apps and coaching that run on it before you buy anything new.
Looking after your health beyond glucose? See my lists of the best sleep calculator apps, the best sleep apps for busy women and the best meditation apps for stress at work.
Want your tool on this list? Featured spots and reviews here are paid partnerships. Here's how to partner with me.
Frequently asked questions
What's the difference between a CGM for diabetes and a glucose biosensor?
The makers describe them differently. Some CGM makers here write their pages for people living with diabetes. Others sell a wearable glucose biosensor with an app, and one of those pages is titled 'No prescription CGM'. Read each maker's own page for which group a device is in.
Can I use a CGM app with a sensor I already have?
Two companies here say so. One says you can use its app with your own CGM or get one through it, and the other has a Bring Your Own Sensor option to use its app with your current CGM.
Is an insulin pump the same as a CGM?
No. One maker here makes insulin pumps, including a 780G system that works with connected CGM sensors, and it has a page to compare CGMs. The Libre site lists compatible insulin pumps from the sensor side.
Which of these sensors goes under the skin?
Eversense says its sensor is designed to rest under your skin, with a removable smart transmitter that can be taken off and put back on.
Can any of these show glucose without a phone?
One sensor here has an LED light that shows your glucose range even without a phone: blue for target range and yellow for above range. It also has a mobile app.
Which of these include coaching?
Three mention it. One program offers video calls with a specialized dietitian, one wearable biosensor comes with 1:1 nutrition coaching, and one app says you can go deeper with testing and expert support.


