Gadgetbridge - A free and cloudless replacement for your gadget vendors' closed source Android applications.

Habitica - Habitica is a free habit building and productivity application.

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.

Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.

Strava - The #1 app for runners and cyclists

Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...