The 18a OBMEP is an Android application developed by IMPA.br under the Education & Reference category. This free application aims to simplify the process of sending the answer sheets of selected students in the first phase of the Brazilian Mathematics Olympiad for Public Schools (OBMEP) to the organization. By using this app, school administrators can avoid sending the answer sheets by mail and instead, they can scan and send them digitally. Additionally, they can also fill out the RAIG and the Shipping Document. However, to access the features, users need to have their school's login and password to the OBMEP website.