I see an application and webpage called Yango, and the map they use has OSM data. It seems Yandex provides the map, but I don’t see any attribution to OSM.
The application has OSM data, but it has more contructions.
Mammi71
(One feature, Six mappers and still More ways to map it)
2
I can’t see that OSM data is being used. There are significant differences. Possible similarities only arise because the same things are actually present on the ground.