Hi all, I just figured this out, and it probably works across the globe. Apple only lets promo codes work in the US app store right now (no idea why), which sucks for the rest of the world. However, you can actually get the apps onto your device as long as you have an account with the US app store, and you can do that without giving any credit card info. Just log into the US store, and create an account with an American address (fictional). You do NOT need to give any credit card info, now or ever. (To test the account, try downloading a free app or song.) Now you can redeem a promo code, and download it!