For android users recommend CoMaps, or "OSMand", both are open source and privacy focused. Both use openstreetmaps data, CoMaps just have what I think is a cleaner interface. Both have offline maps, turn-by-turn navigation and frankly a lot more customization since it's not corporate owned. No ads, and no businesses who pay being stuffed in your eyes first when maps load.

Both are much improved since trying to ditch maps a few years ago and basic local business info wasn't available, now it looks to be much improved and it's a great time to jump.

Hope this helps someone.