The best Spy Apps to track someone's location without them knowing are as follows -
EyeZy - The Best surveillance app also well-known by hackers for its advanced features.
Geofinder - Track another phone number using this application.
uMobix - Another best application to track someone's location on Google Maps.
Read More - https://allsavvy.net/how-to-track-someone-on-google-maps.