Bit : Habit Tracker - Bit : Habit Tracker is a digital habit tracking app that comes up with features to help you in keeping track of a large number of habits on the basis of their categories.
Nomie - Open-source mood and life tracking
30 Days Habit Tracker - 30 Days Habit Tracker is an app by Dev landing that comes up with features to help users in developing good habits as well as in breaking any bad habits within a time span of 30 days.
Habit Rabbit - Habit Rabbit app allows users to create life goals so they can track their goals and get things done by using small habits.
Habitica - Habitica is a free habit building and productivity application.
Steady Calendar - A simple beautiful habit-tracker