Google Calendar - Spend less time managing your day & more time enjoying it
Sectograph - Sectograph app enables you to create a visual event tracker to keep track of all your upcoming events and due tasks right from the home screen.
Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.
Power Planner - Record homework and class schedule.
Jorte - Schedule books must be practical and has a good design.
Cozi - Cozi | Must-have app for the modern family