InfiniLink - iOS Companion App for InfiniTime and the PineTime smartwatch
fitbit - The Fitbit mobile app is for people who use Fitbit fitness trackers to keep track of their activity goals, food plans, and other fitness related things. Read more about fitbit.
InfiniTime - InfiniTime is an open-source, C++-based firmware OS specifically made for the PineTime smartwatch.
Gadgetbridge - A free and cloudless replacement for your gadget vendors' closed source Android applications.
Siglo - GTK app to sync InfiniTime watch with PinePhone
AsteroidOS - The open-source operating system for smartwatches.