Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org/.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community/
https://mapcomplete.org/ is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.
@sic_semper_tyrannis
If you can get the parcels from the municipality then you can probably give them a false OSM tag that renders and convert to show on OsmAnd via OsmAndMapCreator (then sideload them). It might be best to convert the addresses to OSM format too so they display.
Alternately there are two apps for putting QGIS projects on a mobile phone: QField and Merging/Input. They are meant for data collection but can be used to just display things as well.
Thank you so much!
Should indeed be doable, but please: do not upload this data into the "real" OpenStreetMap.org. We don't do parcel data (it is not verifiable on the ground), and imports are something that should be done with care.
However, you can use the tools. Use JOSM to prepare the data and convert it to a .osm-format on your local computer. Then use the OBF-creator to make an OBF file which you can drop at the right location on your phone. The map creator is right here :https://osmand.net/docs/versions/map-creator