Calvetica - The fast calendar for iPhone. Add an event in just two quick taps.
Google Calendar - Spend less time managing your day & more time enjoying it
24me - Next Generation Personal Assistant
CalenGoo - Features | 1.0.175 for Android™
Awesome Cal - Awesome Cal is a Calendar application for your iPhone that you can take anywhere and keep close by to monitor all the upcoming birthdays, festivities, meetings, and more from a single place.
CalendarZ - CalendarZ is a simple yet high-level calendar application, introduced lots of advanced functions and features.