Rus tili 11-sinf is an Android app developed by Turkiston that provides a comprehensive guide to learning the Russian language. The app is designed for students of 10th grade of middle and secondary specialized, vocational educational institutions with Uzbek and other languages of instruction. The app is based on the textbook by S. Yu. Islambeckova, Y. Yu. Musurmanova, Z. Kh. Abduraimova, and L. N. Tagiyeva.

The app includes a wide range of features such as lessons on grammar, vocabulary, and pronunciation, as well as exercises and quizzes to test knowledge retention. The app is free to download and use, making it accessible to anyone who wants to learn or improve their Russian language skills. Overall, Rus tili 11-sinf is a great resource for students and language enthusiasts looking to enhance their knowledge of the Russian language.