VMBO-BK is an Android app developed by Uitgeverij Essener, designed to help students test their knowledge of Maatschappijleer 1. The app is specifically meant for students studying at the VMBO-BK level and is a part of the Thema's Maatschappijleer series published by Uitgeverij Essener.

The app offers a variety of practice tests, covering different topics and themes, to help students prepare for their exams. The questions are well-structured and are designed to test the students' understanding of the subject matter. The app is free to download and use, making it accessible to all students who wish to practice and improve their knowledge of Maatschappijleer 1.