The size matters.
In general, the smaller one comes to first when we think about the screen protectors. Precisely iphone's screen protectors comes to first not iPad's one. It means that we're given a symbolism to screen protectors.
In the market, we got various screen protectors everywhere. Someone just finds it for smaller one but needed the larger one. Bigger and geometrical shape comes to hard to apply as you know that.
I have something to show you. It's just size matters not easy to say. Hope you make this clear naturally.