I wish there were a good way to share locations from OsmAnd, akin to what3words. It doesn't seem to support copy or paste of Open Location Code (aka plus-codes), for instance. Maybe it doesn't matter and no one will ever know what any of these systems are, but W3W does seem like it's a bit known and it's totally proprietary and the people behind it hate anyone using it. I often share locations from OsmAnd and the most useful part of it is usually the link to osmand.net/go, which is a shame because it requires internet access (even when the map is already downloaded).