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.

CalendarZ - CalendarZ is a simple yet high-level calendar application, introduced lots of advanced functions and features.

Dreamie Planner - Dreamie Planner app contains a built-in diary through which users can write important details about their daily tasks and can send the content of the diary to their friends and colleagues.

CalenGoo - Features | 1.0.175 for Android™

Power Planner - Record homework and class schedule.