Where is the exact problem there?
I never came upon an app that would cause a problem on my Android tablet because it's not a "first party tablet app".
Especially nothing that would justify the immense cost of an iPad.
I guess it's a question of convenience, if all you're getting is a big phone app, it's not always gonna work very well, I'm not sure what you mean by "would cause a problem" but I've often come upon apps that simply aren't nearly as easy to use on a tablet compared to a phone.
For me, it's not a convenience problem, it's a trust problem. After all the bad press I've read, I can never trust my family's data to Android. The premium I pay for Apple products lets me sleep at night.