Starting from scratch - what Nav Apps should I get

[Kiwi.]

I do a lot of powerboat fishing between Bundaberg and the Gold Coast. Our most used chart app for that area is iSailor on my iPad. The colours they use on their charts give the best picture in bright sunlight and their charts seem very accurate. (I haven't hit anything using them). They have a chart for Australia, New Zealand, Papua New Guinea and the South Pacific. I much prefer it to Navionics.