Need Help Finding Geofencing App

[Chumanio]

I need an app that will alert me at a particular time if I am away from "Home". I've found an app that will alert me if I am away from home at a specific location, but I want it to be universal. IF I am away from home, anywhere that might be, alert me at the specified time. Otherwise, if I am home, do nothing. Any and all suggestions will be appreciated.