Apple's driving coverage has been improving and is now as good as Google's in the SF Bay area. Google is still better at walking directions (especially involving building access), and I'm sure their coverage is superior globally. Apple doesn't support multi-point itineraries and doesn't have depart at / arrive by functionality, which can be very useful.

Apple has generally copied Google's mobile UI approach, which has been devolving for a few years now (2018 brought the large and useless bottom "explore" panel IIRC). Google's iOS app is almost impossible to use as an actual map now -- it's exceedingly difficult to pan, orient, or zoom to inspect things. Everything you do has to be part of some flow that somebody designed, while it flashes surveys at you. Trying to do anything else just bounces you between flows in a loop. It's become and idiot app to the point that I wonder how those involved sleep at night.