How to Use The Dexcom G7 App Properly

People with diabetes need to check their blood sugar regularly. For many, finger pricking and traditional blood glucose meters become a routine but often lack the complete picture. If you’re one of them using the Dexcom G7 Continuous Glucose Monitoring (CGM) system, then you are already holding a powerful tool in your hand. The Dexcom G7 goes beyond single-point readings, providing real-time glucose trends and insights that empower better diabetes management. The true power of the Dexcom G7 lies in its companion app. This user-friendly app unlocks the full potential of the system, allowing you to view your glucose data in various ways, set personalized alerts, and track trends over time. This article will show you how to use the Dexcom g7 app properly and get the maximum outcome.

A male doctor indicating Dexcom G7 App on his left side and "How to use the dexcom g7 app properly" this text is on his right side.

Downloading and Setting Up the Dexcom G7 App

Before downloading the app, it’s important to ensure your smartphone is compatible with the Dexcom G7 system. To verify compatibility, visit the Dexcom website at This ensures seamless communication between your phone and the sensor, guaranteeing a smooth user experience.

If your smartphone is compatible with the Dexcom G7 system, then let’s start the next step. The Dexcom G7 app is readily available for most smartphones and tablets, and it’s pretty simple to install. For iPhone users, head to the App Store, and for Android users, visit Google Play. Simply search for “Dexcom G7” and download the official app from Dexcom, Inc.

Once downloaded, launching the app will prompt you to create a Dexcom account. This account will be your central hub for managing your CGM data. Complete the signup process by providing your name, email address, and password.

Sensor Insertion and Pairing

Now that the app is ready, it’s time to connect it with your Dexcom G7 sensor. Proper sensor insertion is vital for receiving accurate and reliable glucose readings. Dexcom provides excellent resources to guide you through this process. Their website offers detailed instructions and a helpful video that visually demonstrates sensor insertion and overpatch application. Here is the video below.

Once you’ve inserted the sensor, locate the four-digit pairing code. This code is critical for establishing communication between the sensor and your app. You’ll find this code printed on the label of the sensor applicator you just used. Alternatively, if you’ve misplaced the applicator, the pairing code might also be accessible within the Dexcom G7 app under the “Connection” or “Sensor” section (depending on the app version).

With the pairing code in hand, open the Dexcom G7 app. The app will guide you through a straightforward pairing process. Look for prompts within the app that ask you to enter the pairing code. Once you enter the correct code and follow the on-screen instructions, the app will attempt to establish a connection with your sensor. This pairing process typically takes a few minutes. Be patient, and within a short while, you should see your sensor information displayed on the app.

Dexcom G7 App Interface

The Dexcom G7 app boasts a user-friendly interface designed to present your glucose data clearly and conveniently. Let’s explore the main app screens and understand their functionalities:

Overview Screen:

This is your central hub, displaying the most critical information at a glance. Here’s what you’ll find:

  • Current Glucose Reading: A large number prominently displays your current blood sugar level.
  • Trend Arrow: An arrow beside the reading indicates the direction your glucose is trending – up, down, or steady.
  • Graph: A visual representation of your glucose levels over the past few hours allows you to see trends and patterns.
  • Alerts: This section displays any active alerts for high or low glucose levels.

Glucose Trends:

This screen provides a more detailed picture of your glucose fluctuations over a chosen timeframe. You can choose to view trends for the past hour, day, week, or even longer. This allows you to identify patterns and pinpoint factors that might be affecting your glucose levels.


This section acts as your glucose data archive. You can access detailed historical data, including readings, trends, and notes you’ve added. This comprehensive data allows you to analyze trends and make informed decisions about your diabetes management.


The alerts screen lets you customize various notifications for your glucose levels. You can set thresholds for high and low blood sugar levels and choose how you’d like to be alerted – through vibrations, sounds, or on-screen notifications. This proactive approach ensures you’re aware of potential issues and can take action to maintain healthy glucose levels.


The “Settings” section acts as the control center for your Dexcom G7 app experience. Here, you can manage various app settings like units (mg/dL or mmol/L), customize alerts, and even share your data with healthcare providers (if applicable). This section also allows you to access additional features and personalize the app to your specific needs.

By familiarizing yourself with these key screens, you’ll be well-equipped to navigate the Dexcom G7 app and unlock the wealth of information it provides.

Utilizing App Features

The Dexcom G7 app goes beyond simply displaying your glucose readings. It empowers you to actively manage your diabetes through a variety of powerful features:

  • Real-time Glucose Readings and Trends:  The app keeps you constantly informed about your current glucose level and its direction (upward, downward, or steady). This real-time data allows you to make informed decisions about your meals, insulin dosages, and activity levels throughout the day.
  • Setting and Customizing Glucose Alerts:  Never miss a critical glucose swing again. The app allows you to set personalized high and low-glucose alerts. These alerts will notify you (via vibration or sound) when your readings reach pre-defined thresholds, prompting you to take corrective action to maintain a healthy glucose range.
  • Reviewing Historical Glucose Data and Reports:  The app meticulously logs your glucose readings over time. This historical data can be accessed in the “History” section and viewed in detail with timestamps. Additionally, you can generate reports that summarize your glucose trends over longer periods. Analyzing this historical data allows you to identify patterns, understand how your body reacts to different factors (food, exercise, etc.), and make adjustments to your diabetes management plan accordingly.
  • Adding Notes and Insulin Information:  The app offers an optional feature to add notes alongside your glucose readings. This allows you to record details like meals, medications, or exercise, which can be helpful when analyzing trends and identifying potential causes for glucose fluctuations.  Similarly, you can optionally log your insulin doses within the app, creating a comprehensive picture of your diabetes management routine.
  • Sharing Data with Healthcare Providers:  With your healthcare provider’s consent, the Dexcom G7 app allows you to securely share your glucose data with them. This can be incredibly beneficial for consultations and collaborative adjustments to your treatment plan.

By utilizing these features effectively, you can transform the Dexcom G7 app into a powerful tool for proactive diabetes management.

Additional Tips and Troubleshooting

The Dexcom G7 app offers even more functionalities depending on your specific sensor model. Some sensors may require calibrations during use. The app will guide you through this process if applicable.

To ensure a smooth connection between your sensor and the app, keep your smartphone within a reasonable distance (around 6 meters) and avoid obstacles like walls or thick clothing. Additionally, make sure Bluetooth is enabled on your phone. If you encounter any app issues, restarting the app or your phone can often resolve minor glitches. For more complex troubleshooting, Dexcom provides comprehensive support resources on their website ( or within the app itself. You can find more useful information in the video below.


By mastering the Dexcom G7 app, you unlock a world of possibilities for proactive diabetes management. From viewing real-time glucose trends to setting personalized alerts and reviewing historical data, the app empowers you to make informed decisions and take control of your health.  Remember, explore the app’s various features, personalize it to your needs, and don’t hesitate to consult your healthcare professional for any questions. With the Dexcom G7 app as your companion, you can confidently navigate your diabetes journey.

Disclaimer: The information provided in this blog post is intended for educational purposes only and should not be construed as medical advice. Please consult with your healthcare professional for any questions or concerns regarding your diabetes management plan. It’s important to note that we have no affiliation with Dexcom and are not engaged in any promotional activity for their products.

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