Where do they source their data? I've contributed a lot of hyperspecific information to OpenStreetMap about my location that Google gets very wrong. It looks like Apple took some of it, slightly tweaked some stuff, and completed ignored other bits.
I like SteetComplete but it's very basic, it just asks basic questions about the area you are in based on existing data.
I will usually set out to document something on my bike and just take lots of pictures, particularly of intersections. I then use the OSM website to update things at home.
The more meta data you feed into OSM, the more pointed questions StreetComplete asks. It can ask about simple things like road composition, street markings, and crossings. Often it's easier and faster to answer questions in App than using the OSM website.
For people who want to contribute but don't feel like traveling around, there's plenty to do at home using aerial or street view data. Many house numbers are wrong or misaligned with home locations.
Many neighborhoods use a hand full of footprints for homes and will mirror them or slap on a different facade. So I like to use aerial photography to trace out the foot prints of a few homes and then copy paste those onto all the like model homes.
Then I use street view photography to get accurate house numbers and update maps as well. The house numbers and locations vary wildly but for condos and townhomes they're usually pretty bad.
Simply putting accurate house numbers on foot prints makes a world of difference. Companies like Lyft and Amazon use OSM data for pickups and deliveries.
Road information is also often out dated, especially for new construction. We had a lot of people in our neighborhood complaining about Lyft pickups not being able to navigate to their location. I fixed our neighborhood, tagged Lyft on Twitter and they updated their maps within a week.
