Redlight Traffic is the first of its kind — it will funnel anonymous tips on suspected prostitution to a secured website that can only be accessed by police officers.
Through the app, you can report suspicions, upload photos and send GPS coordinates. You can provide information on a person, business or general area.
The goal is to teach locals how to identify the signs of sex-trafficking, and help law enforcement build criminal cases against pimps and johns.
However, many critics said the app is overreaching and encourages neighbors to spy, creating a Big-Brother state.
Redlight Traffic started with a $26,000 grant from the Seattle Kiwanis Memorial Fund, according to The Seattle Times.
It’s available now across the nation, and creators expect it’ll take some time to catch on.