Comment by fgutmann

I highly recommend the map material and renderthemes from openandromaps.(https://www.openandromaps.org/en)

They are great for cycling and hiking. Setup is a bit more involved compared to maps.me, because you need a separate maps viewer app. Overall nothing too complicated for a somewhat tech savvy audience though.

My mapping app of choice is locus maps. There are alternatives such as OruxMaps available too.