A few years ago OSMAnd for iOS was much more limited than Android version. Not sure how it is today though. If that’s still the case, could be just features are limited and app does less work.
Or it could be fast Apple processors, better rendering API or anything else.
Screenshot from OSMAnd on Pixel 7P for illustration
On the screenshot you see: vector offline map, 3d hill shadows, height countour lines, 3d view, many route layers, navigation and POIs rendered.
A few years ago OSMAnd for iOS was much more limited than Android version. Not sure how it is today though. If that’s still the case, could be just features are limited and app does less work.
Or it could be fast Apple processors, better rendering API or anything else.
Screenshot from OSMAnd on Pixel 7P for illustration
On the screenshot you see: vector offline map, 3d hill shadows, height countour lines, 3d view, many route layers, navigation and POIs rendered.