Abbott FreeStyle Libre 3 is a real-time continuous glucose monitor (CGM) approved for people with type 1 diabetes, offering automatic, minute-by-minute glucose readings sent directly to a smartphone—no scanning required.

It uses a small, slim sensor worn on the back of the upper arm and lasts for 14 days. The device features a 1-hour warm-up, no fingerstick calibration, and a high level of accuracy (MARD ~7.9%). Users receive optional real-time alerts for high and low glucose levels, helping prevent dangerous swings.

Libre 3 is one of the smallest and most affordable CGMs on the market and is being integrated into select insulin pump systems. It’s an excellent choice for patients who want continuous, low-profile glucose tracking with minimal maintenance.