This program teaches and tests the knowledge of Russian language of the child starting from primary school. The app contains several sections: dictation, mistakes, results, settings and help. By choosing the desired section, the user can be tested, see the mistakes, monitor results and manage application settings. Features:• More than 10 of the rules of the Russian language and 1000 test words.• Dictation based on the selected rules of the Russian language.• History of mistakes.• Graphs and chart table of all results.• Tips and rules of the Russian language.• Score.• A full report on the results.• Various difficulty levels.• Additional settings. Keywords: Russian language, dictation, rules of the Russian language, spelling, grammar, literacy, testing.