There is an app called gwhizz, as far as Apples maps, I won't be using it until it is more accurate than three kms away from where i am. The Australian police are urging peolpe not to use Apple maps
Not enough caffiene in me yet to go looking for the article, but it seems that the erroneous data that was used in the Apple maps (fixed now, by the way) was obtained from...
wait for it...
The Aussie government!