I don't even bother using google maps for european alps, only for car navigation (online). Its vastly superior, so many hiking trails and other interesting things (like abandoned buildings/temporary sheds) are well documented, and usually pretty accurate. I've done tons of hikes to places I've never visited before, met nobody and just planned whole trip based in presence of those trails. Not a single disappointment.
Personally I use View Ranger on Android which is free and uses OSM maps. I 'preload' it offline by just looking at the whole area online (maybe there is some preload of a block/circle but I've never needed that, its default cache is enough for even 2 week hiking). I don't even bother with GPX trails, just follow the visible trails and decide on spot.
Personally I use View Ranger on Android which is free and uses OSM maps. I 'preload' it offline by just looking at the whole area online (maybe there is some preload of a block/circle but I've never needed that, its default cache is enough for even 2 week hiking). I don't even bother with GPX trails, just follow the visible trails and decide on spot.