[mikeocool]

It depends on what your goals are.

Arguably, the easiest way to make a "quick" iphone app, is to write a web app with a UI optimized for mobile and put it on a server and give out the URL. The app won't feel quite like a native app, it won't be able to run background tasks, each time you run it, it'll probably need to load all of the resources, but it's a great way to quickly test your concept, it'll work on all mobile platforms, and you won't have to get it approved by an app store.

[jasongullickson]

Agreed, and if getting it into the App Store was a requirement, wrapping a functional "Web App" in something like PhoneGap is probably the easiest thing you'll ever do using Xcode.