A new version of the Dexcom ONE app will be released soon. After the update, your low and high alert settings will be reset. Click here for more information

Getting Started

How do I set up my Dexcom ONE app?

Last Updated · September 28, 2021

Set up your Dexcom ONE app before inserting your sensor.

To set up the app:

  1. Go to the app store
  2. Search for Dexcom ONE
  3. Download and open the app

With the app open, follow the onscreen instructions.

5-step learning journey

Discover education resources, organised in a 5-step journey, to learn key information about your Dexcom ONE CGM system, from getting started, your first 10 days, to using Dexcom ONE in the long run.

Step 1: The basics of CGM
Step 2: Getting started
Step 3: Your first 10 days
Step 4: Using Dexcom ONE in the long run
Step 5: Understand your Diabetes trends