153 Cidadão is a free Android application developed by CPN Informática, falling under the Social & Communication category. This app allows users to submit reports directly to the Municipal Guard, access essential and emergency contact numbers with a single click, interact with the Municipal Guard of their city, and receive real-time news about significant events related to the Municipal Guard in their area. Additionally, users can request assistance using the PANIC feature or the MARIA DA PENHA feature at the touch of a button.

The app currently integrates Municipal Guards from various regions including São José do Pinhais, Pinhais, Quatro Barras, Campina Grande do Sul, Campo Largo, Paranaguá, Ponta Grossa in the state of Paraná; Chapecó in Santa Catarina; and Arujá, Vinhedo, Bragança Paulista, Valinhos in São Paulo. However, access requires approval from the respective Municipal Guard.