I ran mine on an iPad from Silverton to Tibooburra with a diversion from Milparinka to Pooles grave and Mt Poole Historic Cairn on day one of full use.
Second day from Tibooburra to Innamincka via Warri Gate, Santos Station, Epsilon Station to Della and then via the Srezlecki.
It worked perfectly and showed where I was all the time.
Used it again all the way to St George via The Dig Tree, Noccundra, Thargomindah and Yowah with numerous off main track excursions and it was excellent imo.
The only errors I have found seem to be around built up areas, Port Elliott caravan park in SA being an example where it is shown on the wrong side of the road and too far west.
For the price it is great, just download all the associated free maps on wifi and you are good to go.