The Dexcom G7 app is the companion app for the Dexcom G7 continuous glucose monitoring (CGM) system, developed by DexCom, Inc. — one of the most widely used real-time CGM platforms in the world. Paired with the small, wearable G7 sensor, the app turns your smartphone into a live glucose dashboard: a new reading every 5 minutes, trend arrows that show where your glucose is heading, and alerts that warn you before highs and lows become emergencies.
Who is it for?
The G7 system is used by people with type 1 and type 2 diabetes, including those on insulin therapy and, increasingly, people using CGM data to guide nutrition and lifestyle decisions. Because readings arrive automatically, there are no routine fingersticks and no logbooks to maintain — the app records everything.
What makes G7 different?
- 60% smaller sensor than the previous Dexcom G6, worn on the back of the upper arm.
- 30-minute warmup — the fastest of any major CGM system.
- Up to 10 days of wear per sensor, with a 12-hour grace period to swap in a new one (a 15-day sensor version has also been introduced in the US).
- Direct-to-watch connectivity, so a compatible Apple Watch can receive readings without your phone nearby.
- Dexcom Clarity built in — time-in-range, GMI and pattern reports you can share with your care team.
Is the app free?
Yes — the app is a free download on the Apple App Store and Google Play. You need a Dexcom G7 sensor (prescription required in the US) and a free Dexcom account to use it.
This is an independent informational site about the Dexcom G7 app and is not affiliated with DexCom, Inc. For medical questions, always consult your healthcare provider.
Ready to try it yourself? Head back to the Dexcom G7 app homepage for the download link, feature tour and setup checklist.