Vector graphics are key in screen resolution.
The important question here is are the apps looking crappy universal binaries? Those apps should work on all iOS devices regardless of screen size. The ones where you have to buy separate apps for iPhone and iPad should be the only ones giving you problems.
The important question here is are the apps looking crappy universal binaries? Those apps should work on all iOS devices regardless of screen size. The ones where you have to buy separate apps for iPhone and iPad should be the only ones giving you problems.