Reasonably good

The map is really very good and after only one day walking around 12 km I found it very accurate.

But the GPS function didnt function. It sort of found my hotel location on an adjacent street half a block away where I had wifi. Then drew a straight line to the VanGogh museum sort of where I had wifi again. Eight hours of wandering after leaving that museum it still thought I was there.

But if that is not important to you I wouldnt shy away from this app.

Sings bass about Amsterdam The Map