Media praise for iPhone Open Application Development
"I see this book being a great tool for the person who wants to write their own personal applications for the iPhone, and who doesn't want to live with the restrictions that Apple is placing on the use and distribution of "official" applications. If you're writing for someone other than yourself, your audience probably won't stray far from the hacker group who also was comfortable with jailbreaking their iPhone. If you're considering developing mainstream applications for the iPhone, this isn't the way you want to go. You'll want to stick with the SDK so that you are assured of a consistent and reliable release and distribution mechanism. Even so, spending time here before moving to the SDK will give you a much greater understanding of the iPhone operating system and hardware interface, which will likely come in handy when you go the SDK route."
-- , Duffbert's Random Musings
"If you need or want to develop for the iPhone -- and you find the restrictions of the Apple SDK onerous -- you can do so today. Zdziarski's iPhone Open Application Development is an excellent place to start, both for its introduction to the platform, and for its documentation of the APIs and frameworks that make the platform run."
-- , Linux.com