The Dexcom G7 and FreeStyle Libre 3 Plus are two of the leading continuous glucose monitors (CGMs) on the market. People with type 1 and type 2 diabetes use these to track glucose trends, see how food affects their levels, and support automated insulin pumps. Both measure glucose through interstitial fluid and connect to Android and iPhone apps, but their differences can have a real impact on daily management, so it’s important to know what sets them apart.

In this video, Justin Eastzer, breaks down how the two sensors compare across size, wear time, warm-up, accuracy, and alerts. The G7 stands out with features like the Urgent Low Soon alert, which can warn of a dangerous low up to 20 minutes in advance, plus a 12-hour grace period that allows sensor overlap. The Libre 3 Plus delivers readings every minute, has a detailed insights page, and includes Libre Assist, an AI-powered food tracking tool that predicts and then measures the glucose impact of meals.

Pump compatibility may be the deciding factor for many users. The G7 works with Omnipod 5, the Beta Bionics iLet, t:slim X2, and Mobi. The Libre 3 Plus connects to t:slim X2, Beta Bionics iLet, and twiist.

Watch the full review above to learn more about how both sensors compare and let us know in the comments which sensor you use and why.

Disclaimer: Diabetech content is not medical advice—it’s for educational purposes only. Always consult with a physician before making changes to your healthcare.