[derefr]

It's really strange to me, that Apple Maps is so smooth in comparison to iOS Google Maps. (Whether or not it is helpful is another question that I'm disregarding here.)

In a technical sense, both apps are displaying all the same kinds of things: satellite tiles, scalable road vectors, rotated outlined text for street names, 3D buildings if you like, etc. But Google Maps is dog-slow compared to Apple Maps at doing it.

Is efficient painting logic for a maps app on mobile a genuinely-hard problem that Apple Maps is being really clever at solving? Or is it an easy problem that Google Maps is being really stupid at solving?