I am about to write a first app. Its just a prepaid calling card dialing application that will at the Address book, and pull out numbers. But there is some account information that needs to be saved on the phone as well. I do Native iPHONE apps, so I can give you the list of native iPHONE libraries. Perhaps someone can confirm the Appcelerator equivalents. More importantly, perhaps someone can tell me a way to figure this stuff out on my own. Is there a chart that compares iPhone / android / appcelerator Objects?

ABPerson.h
NSUserDefaults

I also assume the "tel://<telephone number>" will invoke the telephone.