FreeStyle LibreLink KW is an app approved for use with FreeStyle Libre and FreeStyle Libre 2 system sensors, allowing users to conveniently monitor their glucose levels by scanning sensors with their smartphones. Users of FreeStyle Libre 2 system sensors can benefit from automatic glucose readings updated every minute and receive alerts for low or high glucose levels. The app enables users to view current glucose readings, trend arrows, glucose history, receive alarms, access reports such as Time in Range and Daily Patterns, and share data with healthcare providers and family members.

The app's compatibility may vary across different smartphones and operating systems. It is essential to start the sensor with either the app or the reader to receive alarms on the preferred device. FreeStyle LibreLink does not share data with the reader, emphasizing the importance of regular sensor scans for comprehensive data analysis.