Just create a nz apple Account, it will switch you too the nz store and you can download it, once you do it will update automatically 

All you need to do is go to the app store, scroll down to your name, log in and change your region. You then just download it, and then switch back to Australia. No need for extra accounts or anything

Hi /r/newzealand 

I recently moved to Australia and therefore needed to change my iTunes store location. Can I request an IPA file of the latest version of the Stuff iPhone app please. 

Thanks in advance to all you late night kiwis. 

Stuff iPhone App Request