not all features are Aus-compatible
Downloadable maps on this app are a) US only and b) not free! None the less other features of this app have potential, such as online access to OpenStreetMap and OpenCycleMap which do feature Australian content (and members of those online mapping communities can edit / update those maps). In the early days of testing this app, I've had a few server stability issues but that could be at my end, not theirs.