If you can’t find JobGetter in the App Store, it’s likely you have an iTunes account in a different country because JobGetter is currently only available in Australia.
If this is the case, you can either setup a second iTunes Store account in Australia or simply change the country on your existing iTunes Store account to begin using it in Australia. In either scenario, you can still have content from both accounts loaded into iTunes and on your iOS devices — in fact, each iOS device can support content from up to five different iTunes Store accounts.
Although you can play authorised content from multiple iTunes Store accounts, you will need to choose one account to sign into your devices with for the purpose of purchasing new content. For new purchases, you can switch back and forth between multiple accounts, but you may find this to be cumbersome compared to simply using a single account.
If you simply choose to change the country on your existing iTunes Store account, your previous purchases will be similarly retained and you can begin using the Australian iTunes Store directly with the new account. Similarly, you can switch the account back to your old account should you move back at some point.
It is also important to note that iTunes and iOS enforce a 90-day limit on changing accounts if you have used your account to re-download purchases or have configured it to automatically download new purchases or subscribed to iTunes Match. In this case, you will not be able to switch to another account for these features for 90 days from the time that you first enabled them, although you can still use an alternate account for new purchases if you wish. This limitation does not apply to automatically downloading or re-downloading applications, however—only other types of content such as music, movies, books and TV shows.