Google Calendar - Spend less time managing your day & more time enjoying it
Habit List - Create good habits and break bad ones with the app that keeps you focused.
Jorte - Schedule books must be practical and has a good design.
Momentum - Agile goal and performance management
Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.
Streaks - The to-do list that helps you form good habits.