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Set up a Continuous glucose monitoring (CGM) Field

To display CGM data from your glucose monitoring system, you'll need to install the CGM+ GB app. The default Dexcom app from Garmin does not work with third-party watchfaces.

Required App

CGM+ GB App

This is the recommended app for displaying CGM data on third-party watchfaces.

Supported Systems:

  • Dexcom G6 and G7
  • Libre 1, 2, and 3 (via LibreLinkUp)
  • Nightscout (cloud-based)
  • xDrip+ (Android, local)
  • AndroidAPS / AAPS (Android, local)
  • Spike (iOS, local)
  • Others like Juggloca
Install CGM+ GB
CGM+ GB App

Alternative: Other CGM apps might work as well. Follow these instructions to set them up using a "Custom Complication".

Other Supported Apps

CGM Connect Widget

Alternative widget for CGM data display by Bruder Jakob

View App →
NightscoutGlance

Nightscout/xDrip-focused glance by Horsetooth

View App →
CGM Display Example

CGM+ Display Example

Setup Instructions

1

Install CGM+ GB App

Install the CGM+ GB App from the Garmin Connect IQ store and complete the initial setup for your CGM system:

Dexcom - Installation & Setup → Nightscout - Installation & Setup → Libre - Installation & Setup → xDrip+ / AAPS / Spike - Installation & Setup →
2

Set the Data Field

In the watchface settings on the Garmin Connect IQ app, select "CGM+ GB (Dexcom, Libre, etc)" in any field where you want to show the glucose data:

CGM Field Selection

Select CGM+ GB in your watchface settings

3

Configure Min/Max Values for CGM

Note: When using the CGM+ GB app, your goals will be automatically taken from the "Target High" and "Target Low" settings in the app. Manual configuration is only needed for "CGM: Other" field or the Bruder Jakob app.

For older watchfaces: In the watchface settings, scroll down to "Goals". Set your upper and lower glucose levels next to min/max heart-rate. Use a semicolon (;) to separate the values:

CGM Goals Setup

App-based goals configuration

Format Examples:

  • mg/dL: 70;180
  • mmol/L: 3.9;13.9

    Use a dot (.) for decimals

These values are used with progress bars to show whether your glucose is in range.

Latest Watchfaces: Goals can be configured directly on your watch!

  1. Hold the Menu button on your watch
  2. Go to Watchface → Configure → Settings
  3. Select Other Goals
  4. Scroll down to Glucose
On-watch glucose goals

On-watch goals menu

Glucose goals configuration

Setting glucose goals

4

Wait for Data

Save your settings and open the CGM+ GB app on your watch to start the background process. The data should appear within 30 seconds.

  • • The field will show -- or --- until the first data point is received
  • • After the initial connection, data will update continuously as new readings become available
  • • Make sure your phone is connected via Bluetooth and has an active internet connection (for Dexcom, Nightscout, and Libre)
CGM data displaying on watch

CGM data actively displaying

⚠️ MEDICAL DISCLAIMER

WARNING: THIS DATA FIELD MUST NOT BE USED TO MAKE MEDICAL DECISIONS.

This field is not intended to be used to monitor your blood glucose and should not be used as such. Always rely on your primary CGM device and consult with your healthcare provider for medical decisions.

Need Help? Visit the CGM Documentation for detailed guides, troubleshooting, and FAQ.