This is a geofencing app combination - one for consumers and one for publishers(like stores/restaruants). These 2 Apps , made in 24 hrs of sleep deprived coding, use the Azure Mobile services to store the data , and poll it periodically to provide contextual discounts based on the user's location on the street. There is no such geofencing API for windows phone yet ( there's one for windows store apps, but not yet available for windows phone)