Originally Posted by =X=
What I don't understand is why there is usually two apps with the same title except one as 'HD'. I had always assumed one way or in one the other for tablets. So if you buy an iPad 'HD' app it should work on the iphone/iTouch?
Actually lots of apps don't do that, they have both iPhone and iPad versions in one app, it is just that the ones that do are more obvious
I think it is most common with games.
In iTunes, or on the iTunes website, any app with a little + (plus) icon supports both iPhone and iPad layouts in the one app.
shows an example of the plus icon. The screenshot section shows both iPhone and iPad screenshots.