This application is a free book whose copyright is owned by the Ministry of Education and Culture (Kemendikbud) which can be distributed to the community for free. The book was published by the Ministry of Education and Culture (Kemendikbud) in 2013. The book was designed for use in schools and is compatible with Android devices. This book can be used as a reference for students and teachers. This application is made to facilitate students learning mathematics anywhere and anytime.

The book is based on the curriculum for SMP/MTs Class IX Semester I. The curriculum is a free book that is published by the Ministry of Education and Culture (Kemendikbud) and can be distributed to the community for free.

The book contains the following topics:

Roots and Forms: Number Rank, Multiplication at Departure, Distribution at Departure, Scientific Notation (Standard Form), Rank of Fraction Numbers, Multiplication Table, Series of Numbers, and more.

Patterns, Rows, and Series: Number Pattern, Rows of Numbers, Series of Numbers, and more.

Tiered Comparison: Tiered Comparison, and more.

Conversions: Number Conversions, and more.