Integrate 2gis.ru and Yandex.Maps database
Do I understand correctly that this application can only use free contact databases, and does not use proprietary sources such as https://2gis.ru and https://yandex.ru/maps/? If this is the case, and stolen databases or parsing results are not possible to replenish the database of organizations, I am very sorry. The two mentioned sources are the most complete for Russian-speaking countries. There is hardly anything that can compare with them in terms of the number of official contacts of companies in this region.