I use UnrealBook to display my PDF leadsheets. To turn a page all you do is tough the right side of the screen - very simple and easy to do. Scrolling is done just like you would scroll any document on the Ipad - a simple finger swipe up or down as needed - also very easy to do.

Yes, the screen is plenty large enough to use in portrait mode but it does not increase the size of the leadsheet as much. I guess it is all what you are accustomed to.

It's a keeper for sure for me.

Deane