The iPhone's built-in Calendar is adequate, but if you want a calendar that feels more like your online Google Calendar, take a look at CalenGoo. It gives you access to multiple calendars simulataneously and actually matches the color of the calendar to your online Google preferences. Four views means less hunting and pecking just to find out where and when you are supposed to have lunch with mom. Other key features include:
- Multiple views including Day, Week and Month View, plus an Agenda View that shows your calendar items in a list format
- Compatibility with Google Apps accounts and iTouch
- An offline mode that allows you to use the calendar even if you aren't connected with changes updated when you reconnect
- Infinite flexibility on how the data is displayed including colors, fonts, start times, and other defaults
