Everyday - Take a photo of yourself everyday.
Habitica - Habitica is a free habit building and productivity application.
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...
Habitify - The easiest way to keep track of your habits
Flow Dashboard - Habit, task & goal tracking + quantified self