iPad slidable right hand side

Question

How did they do it? Look at these images:

As you can see you can slide the right panel to the left and back. Is that UISplitViewController?

Answer 1

That's definitely a custom view/controller. The stock split view is what it is. Although I think Matt Gammell cooked up a replacement split view that let's you drag the split around, it only changes the proportional size or visibility of your two views. It would take some additional customization to give it this kind of look and feel. I don't have the URL handy though, I'm sorry.