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...
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.
Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.