I need to represent a linear process (think wizard) in an iPad app.

In principle I could use a UINavigationController and just keep pushing new controllers for each step of the process. But this seems rather inefficient since the process I'm modeling has no notion of navigating backwards so all previous views would pointlessly stay around and use up resources.

At the moment I keep adding and removing a subview to one "master" viewcontroller and basically swapping out the contents. This works but feels rather clunky and I hope there is some nicer way to achieve this.

Additionally there needs to be an animated transition between the views. (I have this working at the moment via beginAnimations / commitAnimations)