Professor - Law No. 4,320 is an application for mobile devices that aims to make Law No. 4,320, of March 17, 1964 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 contests held.

The issues made available are reviewed in accordance with the latest update of Law No. 4,320.