Thanks to recent improvements in the new iPhone OS3 and Google Sync (which now supports MS Exchange), you can sync up to 24 SmartTime Calendars (12 for Events, 12 for Tasks) via Google Calendar, directly to your iPhone Calendar. All
Event Alerts that you create in SmartTime as “Pop up on Google Calendar” get automatically transferred over to the iPhone Calendar as pop-up alerts with sound. These work better than Push because you don’t need to be connected to the internet to receive the alert (as long as you sync’d), and if you are traveling overseas, you will not get charged for SMS pop-ups from Google.
Read our blog article that explains how:
http://leftcoastlogic.com/wp/?p=292