ПДД РФ 2021 is an Android application that provides a new edition of the official text of the Road Traffic Rules of the Russian Federation with the latest changes and additions. The application contains a large number of colored 3D illustrations, which comment on each section of the Rules. The interface is simple and accessible, and the app has a dark theme, which is a plus point for users who prefer to use their phones in low light.

The app provides a search option for finding specific information within a selected topic or section of signs. The author's illustrations are a standout feature of the app, which make the learning process more engaging and interactive. Furthermore, the app does not have any intrusive advertising, making it a stress-free experience for users.

Overall, ПДД РФ 2021 is a comprehensive guide that provides all the necessary information about the Road Traffic Rules in Russia. The app is compatible with Android 9.0 and has been a bestseller in 2021.