Code changes I should do to avoid piracy while distributing my app through Mac App Store?

Question

I am about submit our game to Mac App Store. What are the code changes I should do to avoid piracy (copy-protection) ?

Are there anything else apart from that I should do (Other than signing my app with their provision profile?) before I submit.

Answer 1

You should validate the App Store receipt.

Note that there is deliberately no code that you can just copy and paste into your app to do this: that's so that each app does the validation slightly differently, meaning crackers can't just patch one single version of the validation code.

There's more information on the Apple developer forums.