If you want to access your Google Calendar on your iPad’s awesome looking Calendar app, just follow these simple steps.
1. Open Settings on your iPad.
2. Select Mail, Contacts, Calendars in the left column.
3. Under Accounts, select Add Account.
4. When the list of accounts appears, select Other.
5. Under Calendars, select Add CalDAV Account.
6. Input your information. Use www.google.com for the Server.
7. Select Next.
Go to the Calendar app to view your Google Calendar events.