I have iOS language learning software where I use a UISplitViewController (Master/Detail) in landscape mode. At the top level, I have items such as (Study, Quiz, Dictionary, Hangman, etc.)
Some menu items take the user directly to the Detail screen. However, most screens, like Quiz, display another list from which the user must choose a category.
I don't want to keep the navigation on the screen because I'd like to use the entire screen for the detail. A couple of options that I'm considering are:
Hide the navigation once the user selects the desired option. This Vimeo video explains how (http://vimeo.com/13054813).
Use a slide-out navigation menu. Is this acceptable for multi-level (tree?) lists? I don't recall seeing any apps using this.
Here's the app
And here are a couple of screenshots: