Most such "wizards" are going to be total crap. A 30 second look at Seattle Clouds makes me think it's a basic website builder, and all the app does is render said website on the iPhone.
If you're just looking to display a few screens of info, by all means, look into "wizards" like Seattle Clouds. If you're looking to do something more creative, such as a game, or a more interactive app, you're probably going to have to sling some code.