A free app for Android, by Linear Studio Apps.

This application is a digital version of the book BSE SMP/MTs Grade 9 Curriculum. The book was developed with the aim to facilitate the learning of the Indonesian language for students who have been given the opportunity to study in an international school. The curriculum consists of a series of lessons that aim to teach students the basics of the language, as well as some useful grammar and vocabulary. It is intended for students who have already completed their studies in an academic school, and are in the process of preparing for their examinations. It is also intended for teachers who wish to teach the language to their students.