Unfortunately, I don't have an iPad to test this, hopefully someone might and will be able to weigh in on the issue.
I am building an app which will be iOS Universal (as all should be, nowadays), but the tricky bit is that on iPhone it works in portrait mode, but on iPad in landscape mode. Now, I have that part of the issue sorted, I'm using rotate camera to align everything on screen, the issue I'm facing is what will happen with ads. Will they appear sideways along the shorter dimension of the iPad screen (where they normally should appear, had the iPad been oriented as portrait as well)?