Locus Map can also work with external offline maps acquired from other sources - PC software, cartography publishers and other map providers. It is necessary to copy these maps into your phone's memory or on SD card and tell Locus Map where to find these map data:
Maps stored in one (sub)folder are automatically merged. Both as areas and zooms, i.e. you can go freely from one map to another, from one zoom in one map to another zoom in a different map without need to switch between them manually. If you want to add external maps to Locus without merging them, store them into individual subfolders and then add them one by one.
There is a huge amount of map file formats and Locus Map is proud to be one of a few to support so many of them:
If you come across a map file in a format not included in this list and you would like to use it in Locus Map there is no need to worry. There is a lot of desktop conversion software to solve the problem.
Versions 2.x of Android operation system can not handle files of 2 and more gigabytes. Keep it in mind when downloading your external maps!
If you need a bigger map, download more smaller areas, copy them into Locus/Maps directory, Locus Map will merge them and use them as one file.