Free reference

CGM features and fixes

10 CGMs. For each one, what the maker’s apps do for the people who follow the wearer, and the maker’s steps when something goes wrong, from the maker’s own documents with the sources quoted.

CGMApple WatchiPhone widget and Lock ScreenAndroid followerSignal-loss alert
Dexcom G6YesYesYesYes
Dexcom G7YesYesYesYes
Dexcom ONE+Yes–YesYes
Dexcom SteloYes––Partly
FreeStyle Libre 2 and 2 PlusYes–YesPartly
FreeStyle Libre 3 and 3 PlusYes–YesYes
Medtrum TouchCare Nano CGMYesPartlyYesYes
Eversense 365PartlyPartlyYesPartly
Medtronic SimpleraPartly–YesYes
SIBIONICS GS1NoYesYesYes

“–” means no maker document covers it. For follower apps from other makers, see the app comparison.