Application does not collect personal or sensitive user data and it does not share them to anyone. All you personal data keeps inside your phone. This application does not send any information to the third partie's servers, but to get places around or routing information we must use APIs from Google and Facebook. Without doing so this application could not do anything useful.
Using routing with this application you use it same kind as you do when you directly use Google's map-applications and same kind information is sent to Google's servers and handled there using Google's privacy policy. To get Google Place information around you or walking route information you must allow Google to get your place search information, which in most cases is information of your current location.
When you use Facebook places with this application you use it same kind as you use directly Facebook's own application and same kind information is sent to Google's servers and handled there using Facebook's privacy policy except that this application does not send to Facebook's server other information than your Facebook place search information which is in most cases is information of your current location. To get Facebook places around, you must allow application to to use Facebook's API pressing Facebook button in the screen.