Focus Concursos is a free Android application developed by Grupo Focus de Educação. It falls under the category of Education & Reference and provides a variety of features to help students prepare for competitive exams. With Focus Concursos, you can watch all the classes of your course, download them to watch offline, and download support material.

The app has a unique feature that marks the classes you've already seen. The class is marked as viewed after watching 90% of the video, so you don't have to worry about keeping track of your progress. Additionally, you can accelerate the video up to 2x if you're using Android 6.0 or higher. If you have a live course, you can even watch live classes through the app. Overall, Focus Concursos is a great tool for students who want to optimize their study time and make the most of their exam preparation.