With Apple... you should be able to unless Apple bans it from every country's App Store. All you need do is create a new iTunes account for another country (New Zealand or whatever), sign out of your device's US app store, sign in with the alternate account, download what you want, then switch back to your primary account. The app still functions even though it was downloaded to the device with the non-current iTunes account. Not sure if updates still work, but it's trivial to repeat the process above if not.