CPB Prova is an Android-based assessment and knowledge management platform designed by Estuda.com for students of CPB Educacional. The app is free to download and offers various features to help students track their performance and improve their studies.

The app provides a range of features, including questions, tests, and simulations, which allow students to track their performance online. The app also offers a detailed analysis of the student's strengths and weaknesses, providing tips on where to focus to improve their studies. In addition, students can create simulations and participate in challenges to test their knowledge and track their progress on the ranking leaderboard.

CPB Prova also offers access to materials sent by teachers and allows students to create study groups. Other features include a blog, study groups, essay topics, a college calendar, study plans, goals, forums, and rankings.

It is worth mentioning that the app is exclusively for CPB Educacional students and requires an internet connection to function. However, the app is a comprehensive and versatile tool to help students prepare for ENEM or college entrance exams.