MaMan

Self hosted ,or cloud?

This dev in the link gathers address data and inserts it into map obf files. You download each one you need then you put the obf file in osmands android data directory where your map files usually go. There's also an app called addresstogps that allows you to lookup an address and it converts it into gps coordinates and allows you to open it in any map app. However addresstogps uses Google as a back end. Ive found that dev in the links address lookup to be so robust, there's almost never a time when I need to use a different address lookup.

Osm maps address data is worthless. This dev https://github.com/pnoll1/osmand_map_creation/releases has osm maps you can download with adddress data in the maps. Also theres an app called addresstogps . Itll convert the address into gps coordinates and you can open it in any map. The only thing wrong with it however is, addresstogps uses google as a back end.