Need phone support? Request a callback. Visit our improved Help page for answers to frequent questions

Getting Started

How do I set up my Dexcom ONE app?

Last Updated · November 3, 2022

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