O Professor - Law No. 9455 is an application for mobile devices that aims to make available Law No. 9455, of April 7, 1997, updated to all interested parties who intend to hold public or private tenders.

In a practical and objective way, the application was developed so that interested parties can organize their studies and, consequently, have a better performance in the competitions held.

The Questions made available are reviewed in accordance with the latest update of the Law.