Where can I download .osm extracts that are equivalent to .obfs from download.osmand.net?

[osmandlover]

Sometimes I need to swap out one of obfs available in Osmand with one that I built myself with OsmandMapCreator (OAMC).

Right now, I grab .osm extracts from https://download.geofabrik.de/ which works, but they are different size and shape to the prebuilt obfs available at https://download.osmand.net/list .

To avoid overlap with Osmand maps, this means that I either have to grab larger region, which takes ages to process (if my computer can even process it without crashing). Or I have to grab many small regions, which is OK but decreases performance of Osmand.

I expect regions available on Osmand have been chosen for optimum size and shape. It would be great if I could get original .osm (or .osm.pbf or .osm.bz2) files that were used to create the OsmAnd maps, and then I could swap them out one-for-one.

Are these osm files available anywhere? Do Osmand extract them themselves, and if so do they make available anywhere?

[vshcherb]

In https://creator.osmand.net/osm-extract/

[osmandlover]

Thanks! This is what im looking for. These files are extracted on first of each month, I understand this saves resources for the OsmAnd. if i wanted to query OSM database to get same shaped regions, how can I do that? Do you have query for each region or bounding box or similar?