I switched from gmaps (ugh, google) to magic earth (bit clunky) to osmand+ (super customisable but that also quickly overloads daily use) to CoMaps and am very happy with this app. It’s easy to use, looks nice and still gives me the options to easily upload changes to OSM.

I’m using Heliboard, because I love swipe typing.

AFAIK they’re using the browser agent to identify the os. Maybe that obscures the os in some cases