LibreLinkUp²¹ is a free mobile app that allows family, friends, and caregivers to receive glucose data²⁶ from Connections who use a FreeStyle Libre 2 App³⁴ with a FreeStyle Libre 2 Sensor or Freestyle Libre 3 App³⁵ with a FreeStyle Libre 3 Plus Sensor. Once you have installed the LibreLinkUp app²¹ and accepted an invitation from a FreeStyle Libre app user to connect²⁶, you will receive their glucose data on your smartphone. LibreLinkup users who are following Connections that are using FreeStyle Libre 2 or Freestyle Libre 3 system sensors with a FreeStyle Libre app can also receive glucose alarm data and notifications.