So basically im trying to create an app (for ios/android) that lets you basically put in a few locations and the app basically tells you which route to go so you save the most time to visit all locations.
Also it should be able to tell you which time you would need to leave current location (so gps tracking has to be used) to reach target location in time etc..
I would use xamarin with visual studios, is that good? also, do i need the google maps api for the gps thing to work?
kind regards for tips!!