OsmAnd~ can do full offline search, navigation with per-country downloads. The f-droid version is unlimited: https://f-droid.org/repository/browse/?fdfilter=os

OsmAnd~ can do full offline search, navigation with per-country downloads. The f-droid version is unlimited: https://f-droid.org/repository/browse/?fdfilter=osmand&fdid=net.osmand.plus https://f-droid.org/repository/browse/?fdfilter=osmand&fdid=...