PaperFoldGallery for iOS
The first level is a paginated UIScrollView that displays views in each page. The second level contains 2 PaperFold views that are folded/unfolded/hidden depending on the scroll view offset. These views show a folded screenshot of the views below it, and are hidden once the UIScrollView snaps to page.
The subviews can be any UIView subclasses, so it can be static view, or other views like UITableView.
The library takes a screenshot often to get the state of the view below it. If you are using static views, you can improve the unfolding performance by providing screenshots.
Via Vincent Demay