To be honest, I don't know this app, but I don't think there is any simple conversion tool. Also, the question is whether the database contains only the base map or also some trails or points.
If you want to convert routes from this application to Locus Map, I would recommend exporting trails to GPX and then importing the GPX into Locus Map.
If you want to convert routes from this application to Locus Map, I would recommend exporting trails to GPX and then importing the GPX into Locus Map.