Not to discourage usage of OSM at all, but you can absolutely download offline maps on mobile with Google Maps, they’ve just hidden it a bit. If you tap your account icon in the upper right, a menu pops up that includes offline maps, and it’ll let you select boundaries to download.
I prefer OSM since I can use the maps offline. Google maps is useless out in the middle of nowhere without any cell service.
Not to discourage usage of OSM at all, but you can absolutely download offline maps on mobile with Google Maps, they’ve just hidden it a bit. If you tap your account icon in the upper right, a menu pops up that includes offline maps, and it’ll let you select boundaries to download.
Its only car routes though, useless for footpaths and public transport
Edit: I may be stupid
It has all the path data
Source: I just tested it
It’s not only car routes