A free program for Android, by Biuro Urządzania Lasu i Geodezji Leśnej.

mBDL is a mobile application that is a permanent storage and can be used offline. It is intended for users to have access to maps of the BDL in order to better understand the territory in which they live, as well as for any other type of purpose. 

In addition, mBDL contains a tool that allows users to measure and record any place, which is very useful in the case of land surveying. 

This tool can also be used to measure distances, which is very useful for land surveyors. It is also possible to record coordinates of any place, which allows users to find the exact location on a map. 

Furthermore, the mBDL application is equipped with a number of additional tools, such as a tool that allows users to search for the address of a place, as well as to export or import any data that is saved in the raster format.