I'm sure they would be ok with it if you paid Apple 1/3 of any Bitcoin transaction you made through it. Without doing so you create a huge hole in their app revenue tax.
No they wouldn't. Profiting from Bitcoin transfers is a regulatory nightmare. This is because there are no controls to minimise the risk that Bitcoin is being used for money laundering.
I thought that for money laundering to work you had to purchases with the dirty money items that can be sold for clean money, or exchanged for items that can be sold for clean money (and you also want the transactions on one or preferably both ends to be hard to trace).
What are some examples of in-app purchases that would be good for this kind of thing?
If you seriously think regulators care about money laundering, ask yourself why HSBC laundered hundreds of billions of drug cartel dollars, got a slap on the wrist and nobody went to jail.
Money laundering is the new "think of the children" or "terrorists!" bullshit.