Is it something like you can just download the app and it can passively track you and determine things about available routes, times, etc., backed up also by satellite data...
Or would I be like "Oh let me put on here that there is construction near this subway station now that has blocked these exits and this road," etc...?
Actually I think they are now pulling data from Microsoft and Amazon and a few others. They started a alternative map project to Google maps. Like free data. Because Google is charging so much for their maps API.
I haven't got that much into it. But I might start playing with some mapping code.