I need to propose an application android, ultrasimple of use which proposes to visualize various layers offline (french Scan25, Orthophoto). The idea would be to create mbtiles (with QGIS, Mobac, Mapcache, or equivalent) and prepare it for each employee, a file that corresponds to its intervention department, knowing that it must be 100% offline.
Do you have one (or more) applications to recommend that respond to that? The employees for some are novices in computer science, and it would have to be hypersimple to use (OruxMaps, Osmand, Qfield, etc.) offer too much. Here, we would just like to offer the display of these funds, possibly choose the layers / transparencies, focus on the position of the GPS, possibly register a GPS point and that's it.
The better would be that we can offer a link to each employee who can recover the application and the file that contains the data (mbtiles format or equivalent), if possible free / not paid because there are many people to equip .
Would anyone have any advice?