Purchased the South island tour but it didn't load into the app. Tried to get a refund but the refund fee was the same price of the audio tour so it was pointless to bother to get zero dollars back. I did purchased two northern tours through the app, Shaka Guide, and they worked perfectly. So if your interested in this audio tour, I suggest you just install Shaka Guide from the Google play store and purchase the tours directly through the app. Also the best deal is to get the entire island tour which contains all four tours for half the price of getting all four separately. There were a few way points that were incorrect, like the location of King Kamehameha's rock, but for the most part it work fine. The one bit of info I would like to have was maybe a suggested time to start. So if you plan on doing the two North island tours in one day plan on skipping some way points and start early.