Ona tili 9-sinf is an Android application developed by Turkiston. It is a free education and reference app designed for Uzbekistan students in their 9th grade. The app is a comprehensive textbook approved by the Ministry of Public Education of the Republic of Uzbekistan. The latest edition of the textbook is the third edition, which has been updated and improved.

The app contains all the necessary information and materials for the students to learn the Uzbek language and literature. It covers various topics, including grammar, literature, and writing skills. The app also provides exercises and quizzes to help students test their knowledge and understanding of the subject matter. The app has a user-friendly interface and is easy to navigate, making it an excellent resource for students who want to improve their Uzbek language skills.