Habitica - Habitica is a free habit building and productivity application.
Google Calendar - Spend less time managing your day & more time enjoying it
Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...
CalenGoo - Features | 1.0.175 for Android™
Flow Dashboard - Habit, task & goal tracking + quantified self
Annual View - Annual View displays and manages calendar events within a year view.