Managing diabetes effectively requires constant monitoring, precise adjustments to insulin, and careful tracking of blood glucose levels. For individuals with type 1 or type 2 diabetes, Continuous Glucose Monitors (CGMs) have transformed the way glucose levels are tracked, offering a much more accurate and real-time picture than traditional fingerstick testing. These devices can help users make informed decisions about insulin, diet, and exercise, improving overall diabetes management.

At Aidex CGM, we are committed to providing the latest in CGM technology to help individuals with diabetes manage their condition more effectively. In this article, we will explore the best continuous glucose monitors available in 2025, focusing on their features, accuracy, usability, and how they can benefit your diabetes care routine.

What is a Continuous Glucose Monitor (CGM)?

A Continuous Glucose Monitor (CGM) is a device that tracks your blood glucose levels throughout the day and night. Unlike traditional methods, which require fingerstick testing at set intervals, a CGM continuously monitors glucose levels in real time.

A small sensor is inserted under the skin, typically on your abdomen or upper arm, which measures glucose levels in the interstitial fluid (the fluid surrounding the cells). This data is transmitted wirelessly to a receiver or smartphone app, where users can track their glucose levels in real-time. Some CGMs even send alerts when glucose levels are too high or too low, helping users take quick action.

CGMs offer several benefits over traditional testing, including the ability to see trends in blood glucose, adjust insulin delivery based on real-time data, and make informed decisions about food, exercise, and other lifestyle factors that affect glucose levels.

Why Should You Use a Continuous Glucose Monitor?

The best continuous glucose monitors offer several advantages over traditional blood glucose testing methods:

1. Continuous Data: Instead of taking a fingerstick test every few hours, CGMs provide continuous data on your glucose levels, offering a full picture of how your blood sugar fluctuates throughout the day.

2. Real-Time Alerts: Many CGMs have customizable alerts that notify users when their blood glucose is too high or low. This allows users to take action before blood sugar levels become dangerous.

3. Improved Blood Glucose Control: By providing continuous feedback, CGMs help individuals make more informed decisions about insulin doses, diet, and exercise, leading to more stable blood sugar levels and better long-term diabetes management.

4. Convenience: CGMs eliminate the need for multiple daily fingerstick tests, providing a more comfortable and convenient way to monitor glucose levels without interrupting your day.

5. Better Decision-Making: With the data provided by CGMs, users can adjust their insulin delivery in real time based on their blood glucose trends, making it easier to stay within target glucose ranges.

Best Continuous Glucose Monitors in 2025

There are several CGMs on the market in 2025, each offering unique features and advantages. Below are some of the best continuous glucose monitors available, each of which provides reliable glucose data and features that can help you manage your diabetes more effectively.

1. Dexcom G7

The Dexcom G7 is one of the most popular and highly rated CGMs in 2025. Known for its superior accuracy, ease of use, and integration with other diabetes management tools, the Dexcom G7 is an excellent choice for individuals who want a top-of-the-line continuous glucose monitor.

Key Features:

• Accuracy: The Dexcom G7 is widely regarded as one of the most accurate CGMs available, providing precise glucose measurements with minimal calibration.

• Real-Time Data: The system provides glucose readings every 5 minutes, giving you continuous insights into your blood glucose levels throughout the day.

• Integration with Insulin Pumps: The Dexcom G7 integrates seamlessly with insulin pumps, offering automated insulin delivery based on real-time glucose data, creating a closed-loop system.

• Comfortable Wear: The sensor is small, discreet, and easy to wear for up to 10 days, making it comfortable for continuous use.

• Alerts and Alarms: The Dexcom G7 offers customizable alerts for high and low blood glucose levels, helping users take quick action when necessary.

Why It’s Great: The Dexcom G7 is perfect for individuals looking for the most accurate CGM with real-time data and seamless integration with insulin pumps. It’s ideal for those who want top-tier technology and ease of use.

2. Abbott FreeStyle Libre 3

The Abbott FreeStyle Libre 3 is one of the most affordable and accessible CGMs available, offering reliable and continuous glucose monitoring at a lower price point than some of the other options. Its simplicity and ease of use make it an excellent choice for many individuals with diabetes.

Key Features:

• Affordability: The FreeStyle Libre 3 is one of the most affordable CGMs on the market, making it a great option for those on a budget.

• Real-Time Data: The system provides continuous glucose readings every minute, allowing for up-to-the-minute data on your glucose levels.

• No Calibration Needed: The FreeStyle Libre 3 does not require fingerstick calibration, providing a more convenient and comfortable experience.

• Compact and Discreet: The sensor is small and discreet, making it easy to wear throughout the day without drawing attention.

• 14-Day Sensor Life: The sensor lasts for 14 days, reducing the need for frequent replacements and offering long-term continuous monitoring.

Why It’s Great: The FreeStyle Libre 3 offers a budget-friendly option for individuals who want continuous glucose monitoring without compromising on accuracy or ease of use.

3. Medtronic Guardian 4

The Medtronic Guardian 4 is another high-performance CGM that is designed to work seamlessly with Medtronic’s insulin pumps. It provides accurate, real-time glucose data and is an excellent choice for individuals using Medtronic devices for their diabetes management.

Key Features:

• Accuracy: The Guardian 4 provides reliable and accurate glucose readings, which is crucial for individuals who use insulin pumps.

• Integration with Medtronic Insulin Pumps: The Guardian 4 integrates seamlessly with Medtronic insulin pumps, creating a closed-loop system for automated insulin delivery based on continuous glucose data.

• Real-Time Alerts: The system provides customizable alerts for high and low glucose levels, ensuring that users can take action quickly when glucose levels are out of range.

• 7-Day Sensor Life: The sensor lasts for 7 days, offering long-term continuous monitoring with minimal maintenance.

• Convenient Wear: The system is designed for comfortable wear, and the sensor is easy to apply.

Why It’s Great: The Medtronic Guardian 4 is ideal for individuals already using Medtronic insulin pumps who want seamless integration for automated insulin adjustments.

4. Eversense CGM by Senseonics

The Eversense CGM is unique due to its long sensor wear, with sensors that last up to 180 days. This is significantly longer than most other CGMs, making it a great option for individuals who prefer minimal sensor changes.

Key Features:

• Long Sensor Life: The Eversense CGM sensor lasts up to 180 days, meaning fewer replacements compared to other CGMs.

• Real-Time Data: The system provides continuous glucose monitoring and sends data to your smartphone app every 5 minutes.

• Alerts and Alarms: Offers customizable alerts for high and low glucose levels, ensuring timely action to prevent complications.

• Integration with Insulin Pumps: Can be integrated with insulin pumps for automated insulin delivery based on real-time glucose data.

• Accuracy: Known for providing reliable and accurate glucose readings over long periods.

Why It’s Great: The Eversense CGM is ideal for individuals who want a CGM with the longest sensor life, reducing the frequency of sensor changes and offering long-term continuous glucose monitoring.

5. Senseonics Eversense XL

The Eversense XL is an extended version of the Eversense CGM, providing the same benefits with even longer sensor wear. It’s perfect for people who need continuous glucose monitoring with minimal maintenance.

Key Features:

• 180-Day Sensor Wear: The Eversense XL sensor lasts up to 180 days, offering the longest sensor life available on the market.

• Real-Time Monitoring: Provides real-time glucose data and alerts, helping users stay on top of their glucose levels.

• Accuracy: The Eversense XL offers reliable and accurate glucose readings.

• Integration with Insulin Pumps: Can be paired with insulin pumps for closed-loop insulin delivery.

• Convenience: Reduces the frequency of sensor replacements and is ideal for individuals who prefer low-maintenance continuous glucose monitoring.

Why It’s Great: The Eversense XL is perfect for individuals who want a CGM with the longest sensor wear and minimal maintenance, while still enjoying accurate, real-time glucose monitoring.

How to Choose the Best CGM for You

When selecting a continuous glucose monitor, consider the following factors:

• Accuracy: Look for a CGM that provides accurate glucose readings, especially if you are using it to adjust insulin delivery.

• Ease of Use: Choose a system that is easy to wear, apply, and maintain. You want a device that fits seamlessly into your daily life.

• Sensor Life: If you prefer minimal maintenance, consider a CGM that offers long sensor wear, such as the Eversense CGM or Eversense XL.

• Integration with Insulin Pumps: If you are using an insulin pump, choose a CGM that integrates well with your existing system.

• Cost: Consider the price of the CGM as well as ongoing costs for sensors and other consumables.

At Aidex CGM, we can help you choose the best continuous glucose monitor for your needs, offering expert guidance to ensure you get the right system to manage your diabetes effectively.

Conclusion

The best continuous glucose monitor is an essential tool for managing diabetes. Whether you choose the Dexcom G7, Abbott FreeStyle Libre 3, or Eversense CGM, each of these systems offers reliable, real-time glucose monitoring that can help you better manage your blood sugar levels. At Aidex CGM, we offer the latest CGM technology and are here to help you make the best decision for your health. Start your journey to better glucose control today by exploring our continuous glucose monitors.