Языковед - русский язык is a free Android app developed by TEOfrast for users who want to improve their Russian grammar, spelling, and pronunciation. The app is designed to provide users with a comprehensive understanding of the Russian language and to help them prepare for the Russian language State Exam (EGE).

The app features various tests on specific orthographic topics with explanations of the spelling rules, as well as a vocabulary dictation exercise. The app also provides users with the opportunity to learn not only spelling rules but also the correct pronunciation of words. Each test consists of 10 questions and is evaluated on a five-point scale. After completing the test, users can find out the time spent on the test and the average final result.

Furthermore, the app is updated periodically, which allows users to constantly improve their knowledge, write correctly, and communicate effectively. The app is a great tool for students and anyone who wants to improve their Russian language skills.