network geofencing without an app for android and ios

Question

I want to do a little bit geofence advertising but I want people to receive my notifications regardless of weather they have my app or not. so just with their location on, they are gonna be able to receive the advertising.

is this even possible? if yes, can anyone tell me how?

Answer 1

Not possible.

1. You cannot get user-location unless user installs your app which has permission to access to user-location.
2. You cannot send push notifications, unless user installs your app which has permission to receive push notification.