Habitica - Habitica is a free habit building and productivity application.
When Did I…? - When Did I…?
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.
Habit List - Create good habits and break bad ones with the app that keeps you focused.
Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...
Autohabit - Simple iOS app to develop good habits