|Click on the link below and it should take you to the App Store iExtender app:|
Are you trying to get this app to your iPhone, iPod touch or iPad? I'm not sure if it's available for OS X (Mac computers) although I don't see why it shouldn't be.
Another reason it might not be available to you is if you're running an outdated operating system version. It requires iOS 6 or later.
I doubt there would be a regional block on the software.
Edit: I see the link goes to the Australian App Store. Try it anyways and see if it redirects you to your region.
Here is the US link to the app:
message edited by btk1w1