.) OsmAnd (https://play.google.com/store/apps/details?id=net.osmand)
.) MAPS.ME (https://play.google.com/store/apps/details?id=com.mapswithme...)
For other alternatives to avoid getting your habits turned into money by big companies, check out https://ethical.net/
But I guess at that point you can just use Telegram for location sharing.
If you're on an iPhone there's Find My Friends that I use often.
.) OsmAnd (https://play.google.com/store/apps/details?id=net.osmand)
.) MAPS.ME (https://play.google.com/store/apps/details?id=com.mapswithme...)
For other alternatives to avoid getting your habits turned into money by big companies, check out https://ethical.net/