No, Apple is USING OpenStreetMap which is a different thing - they pulled the data but haven't contributed much back as they're building their own proprietary backend.

Apple does contribute to OSM quite a bit, see around 4:00 in https://2020.stateofthemap.org/sessions/SPRQVZ/ for details of corporate contributions: "Apple is currently doing the most work on the map".

Here is the base repository of their contributions on GitHub: https://github.com/osmlab/appledata

And if I see this correctly, the #adt hashtag (for Apple Data Team) contains already +100000 changesets for this year alone: https://osmcha.org/?filters=%7B%22comment%22%3A%5B%7B%22labe...

They also pay Kaart to do it, so most if not all of the Kaart contributions are paid for by Apple.

https://wiki.openstreetmap.org/wiki/Apple#Contributions_thro...

Apple's old map was OpenStreetMap plus other sources but its new ones are proprietary. But its new ones are only available in the US, UK, Canada and Ireland.

I believe the old map was mostly TomTom (TeleAtlas) with a little bit of other sources sprinkled in.

Yes, more TomTom that openstreetmap, that was clearly show by the dataquality. Much less walk and vike information. If you don't drive a car all my sampling say OSM is way better.