Police Detector - Speed Radar

Review by eFreeware

Police Detector is a Maps & Navigation app from the developer M.I.R. that turns the road ahead into a shared map. Drivers mark speed cameras, police patrols and road events, and everyone else using the app can see those marks. The idea is simple: the more people marking, the more useful the map becomes for the next driver along the same route.

What makes me take it seriously is the scale. The app has passed 10 million installs and holds a 4.4 average from more than 58,000 ratings, which is a lot of feedback for a utility of this type. It has been on Google Play since April 2017 and was updated in September 2026, so it is not a project that was published and forgotten.

It is free to install, carries ads and offers in-app purchases, and the developer says no registration is needed to use it. That combination makes it easy to try without committing anything, which matters for an app whose value depends on whether enough other drivers are marking the roads you actually drive.

What the shared map actually shows you

The core of the app is the map layer of user marks. Speed cameras and police patrols appear if other users have placed them there, so the picture you get is a live reflection of who has been reporting, not a fixed database compiled once. The same applies to traffic jams, which the app displays as part of the same view.

The developer also lists speed limits as a feature: road sections near cameras and patrols can show the limit in force, provided users have entered that information. That is a useful pairing, because knowing a camera is coming is only half the story if you do not also know what speed applies at that point. Both layers share the same dependency on the crowd, which is worth understanding before you rely on either.

There is a radar detector mode as well, which the developer presents as one of the app's main advantages. I read that as a second way of watching the road rather than a replacement for the map, and it is the kind of feature that suits someone who wants the app running alongside navigation.

Reporting road events, not just cameras

The app is not only about enforcement. You can mark road accidents, road repairs and weight control points, which are the sort of things that change how a journey goes and that a standard navigation app may not reflect quickly. If you are covering long distances, that layer can be as valuable as the camera marks.

There is also a request-for-help function, where a driver who has a problem on the road can ask other users for assistance. It is an unusual addition for a navigation app and it fits the community framing of the whole product: the map is built by the people using it, and the help feature extends that idea past information into something closer to mutual aid.

These features are only as good as the reporting culture around them, and that is the honest trade-off with anything crowd-sourced. On well-traveled routes with an active user base I would expect frequent marks; on quiet roads the map may be thin. The app gives you the tools to contribute, and the value you get back depends on how many others do the same.

Communities, video and the newer additions

Recent updates have pushed the app further toward a social tool. You can now create your own communities, and groups support video. There is also a way to create markers by mentioning them inside a community, which suggests groups can coordinate around specific routes or regions rather than relying purely on the public map.

A user rating system has been added too. In a crowd-sourced app, some way of distinguishing reliable contributors from noise is a sensible direction, and a rating gives the community something to work with when deciding how much weight to give a mark.

The developer has also optimized the app for 2-din car audio systems. That is a specific audience, but a relevant one: if your vehicle has a double-DIN head unit, the app has been optimized with that screen in mind.

What you need before it is useful

Setup is deliberately light. No registration is needed, so there is no account to create and no profile to fill in before you can see the map. That lowers the barrier considerably for anyone who wants to try the app on a single trip.

The requirement that matters is not technical but human. Camera and patrol marks appear when other users have placed them, and speed limits appear when users have entered them. The app is a relay for what its drivers report, so its usefulness on your route depends on how many of them are active there.

The app is free, supported by ads, and offers in-app purchases. I would treat those as the terms of entry rather than a reason to avoid it, but they are part of the package and worth knowing before you install.

Drivers who will get the most from it

This suits drivers who cover the same roads regularly and want a shared heads-up about cameras, patrols and the limits around them. If your commute or work route is busy enough that other users are marking it, the app slots into a routine easily, especially with the radar detector mode running alongside the map.

It also fits people who like contributing rather than just consuming. Marking an accident, a repair zone or a weight control point takes a moment and directly improves the map for the next driver, and the community and rating features give that contribution somewhere to go.

Drivers with a 2-din head unit are a natural fit given the optimization for those systems. And anyone who wants road warnings without creating an account will appreciate that the app works without registration.

Where I would set expectations is on coverage. This is a tool built on reports from other users, so on routes with little activity the map will be sparse. That is not a flaw in the design so much as the nature of a crowd-sourced service, and it is the main thing to weigh before making it part of your driving routine.

A shared road map worth trying

Police Detector does one job clearly: it puts the road knowledge of many drivers onto a single map. Speed cameras, police patrols, traffic jams, accidents, repairs and weight control all live in the same place, with speed limits shown near cameras and patrols where users have supplied them. The radar detector mode and the newer community features round that out.

The case for installing it is the combination of scale and low commitment. More than 10 million installs and a 4.4 average suggest a large, established user base, and the absence of a registration step means you can start using it without any setup. It is free, with ads and in-app purchases as the trade-off.

I would recommend it to drivers who travel busy, regularly reported routes and want warnings from other people on the road, and to those who are happy to add marks of their own. If your driving is mostly on quiet roads where few others use an app like this, the map will reflect that, and the value will be correspondingly smaller.

What's new in version 4.30

* minor bugs fixed * now you can create your own communities * added support for video in groups * added the ability to create markers by mentioning them in the community * optimized for car 2-din audio systems * added user rating system