Gadgetbridge - A free and cloudless replacement for your gadget vendors' closed source Android applications.
Macros - Macros – Calorie Counter and Meal Planner created and published by JosmanTek for Android and iOS devices.
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.
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.
Strava - The #1 app for runners and cyclists
Polar Loop 2 - Polar Loop 2 is a digital activity tracker for those who wants to track their activity 24/7 and are interested in to reach activity goals via smart guidance.