Ok.. So I have xFI locator to locate my fiance anytime. But iphones don't have that app. We've tried several different apps (I have Samsung Galaxy s4, he has iPhone 5) and they've been wiggy and actually caused arguments. (Geozilla) One time he drove out to the perceived place I was supposed to be at.. Can someone recommend the best one please... I do alot of driving for work and hes worried about my safety