Thanks for this question!
Australia is one of our targets, we are currently negotiating with big real estate companies out there as well as preparing the technically for the platform to get listings from landlords directly.
Such platform like Rentberry are also highly required in Japan. Most apartments in Japan require a guarantor who will agree to pay for unpaid rent or damage to the apartment if you fail to pay. This system tends to be very difficult for foreign residents of Japan.
I think such a platform as Rentberry is suitable for many countries. In it to the smallest detail are calculated the needs of both tenants and landlords. In one fell swoop, you accomplish a lot of tasks without wasting time. What else is needed in the modern world!