Professor - Law No. 4,320 is an application for mobile devices that aims to make the updated Law No. 4,320, dated March 17, 1964, available to all interested parties who intend to hold public or private competitions. In a practical and objective way, the application was developed so that interested parties can organize their studies and, consequently, perform better in the competitions held. The Questions available are revised in accordance with the latest update of Law No. 4,320. This app do