Gadgetbridge - A free and cloudless replacement for your gadget vendors' closed source Android applications.
Runtastic - Runtastic offers a series of fitness apps that can be used to track your running, walking, hiking, and cycling, as well as many other fitness routines. Read more about Runtastic.
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.
ForRunners - ForRunners is an personal tracking app for your running which respects your privacy.
Strava - The #1 app for runners and cyclists
TrainAsONE - AI-powered app that uses your data to create your continuously updated training plan – whatever...