Dexcom ONE for iPhone

Overview and purpose

Dexcom ONE+ is an iPhone app built to work with the Dexcom ONE+ continuous glucose monitor (CGM). It provides live glucose values on the phone, eliminating routine fingerstick checks or manual sensor scans, helping users keep better track of glucose levels throughout the day.

Primary functions

• Log meals, insulin doses and other events to create a clearer picture of what affects glucose.
• Guided setup with step-by-step onboarding to get the system running quickly and without confusion.
• Configure alerts and thresholds so you receive notifications for both high and low glucose readings.

Monitoring, sharing, and wearable access

• View glucose readings and receive notifications directly on an Apple Watch for quick, on-the-go access to important information.
• Share real-time glucose data with caregivers or family members via the Dexcom Follow app; the system supports up to ten people monitoring your trends.

Intended users

This application is intended for people who use the Dexcom ONE+ CGM and want a streamlined, mobile-first way to manage diabetes data and notifications on Apple devices.

Suggested alternative

Dexcom G7 — another CGM option from the same manufacturer that many users consider when comparing features and device choices.

Quick summary

The Dexcom ONE+ iPhone app pairs with the ONE+ CGM to deliver continuous, real-time glucose monitoring, in-app event tracking, flexible alerting, caregiver data sharing, and Apple Watch integration to support everyday diabetes management.