Police Lights Free is an Android app developed by ACLU-NJ. As the name suggests, this app allows you to turn your phone into a flashing police light. It comes with a screen and flashlight that emit red and blue lights, which you can adjust to different speeds. Additionally, the app features a siren sound effect that you can turn on and off.

This app can be useful in various situations, such as when you need to signal an emergency or when you're directing traffic. The app is free to download and easy to use, making it accessible to anyone who needs it. With Police Lights Free, you can have a virtual police light and siren in the palm of your hand.