This free app goes further than speed camera apps and gives you a better overview of where and when cops were spotted last. Apart from speed cameras, there are parking controls, bicycle/scooter controls, police stations, laser guns, police patrols, red light cameras, road works, road events and alarms which are visible.
The goal of police controls is to improve the road safety. Keeping in mind that the government measures safety in tickets, there should be better safety when there are less fines. On that approach Cop Spotter is contributing in an amusing way.
With more overview of the cops on the street you can anticipate on time without putting other people in danger and prevent getting a ticket. On the other way around it can be handy if you need a cop really fast.