(The app store ratings for HERE WeGo are a bit low because they recently rewrote the app and the first few versions were unstable. The rewrite added lane guidance, which is a useful feature to have for driving directions.)
- HERE WeGo (web): https://wego.here.com
- HERE WeGo (Android): https://play.google.com/store/apps/details?id=com.here.app.m...
- HERE WeGo (iOS): https://apps.apple.com/us/app/here-wego-maps-navigation/id95...
If the quality of the OSM data in your area is good, the best OSM-based apps are:
- Organic Maps (FOSS, simple interface): https://organicmaps.app
- OsmAnd (FOSS, loaded with features): https://osmand.net
- Magic Earth (proprietary, uses a non-OSM data source for address locations): https://www.magicearth.com
All 3 of these apps support both Android and iOS.