GOOGLE CALENDAR (KEEP YOURSELF TIME FIT)

GOOGLE calendar one of the best apps to keep a track of your daily proceedings from the time you wake up to the next shutting down of human system is available on all devices running from 4.0.3 or later.

This apps was only available in selected android devices like Nexus S and Galaxy Nexus previously.
The Google calendar apps combine all your calendar including calendars that are synchronized to your android device as well as it displays all the events from your Google account.
Using this apps you can do the basics such as:
CREATE, EDIT AND DELETE AN EVENT
View all your calendar at the same time which include non Google calenders 
Use predefined messages to send quick "I'll be late" updates to your event participants directly from the notifications or the event itself . you can also write your own messages.

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• Quickly email all event guests from a notification with a customizable message.
• Snooze events directly from a notification if you’re not quite ready and want to be reminded later.
• Set a home time zone to help you manage your time better when traveling.
• Time range for synced events extends from one year in the past to one year in the future.

Download Google Calendar on Google Play today for devices running Ice Cream Sandwich (4.0.3+) or Jellybean