"ЕГЭ Русский 2023" is an Android app designed to help students prepare for the Russian language exam. It offers a demo version of the 2023 exam, with instant result checking, as well as training exercises for all the tasks in the first part of the exam. The app also includes a textbook with theory and practice for all topics covered in the Russian language exam.

In addition to the textbook, "ЕГЭ Русский 2023" provides reference materials such as an orthoepic dictionary, a paronym dictionary, and sample problems for essay writing, as well as useful tables. The app also features exercises to practice stress and paronyms. Overall, "ЕГЭ Русский 2023" is a useful and comprehensive tool for students who want to prepare for the Russian language exam.