Русский Жестовый Язык is a free educational Android application designed to help users learn Russian Sign Language in a fun and interactive way. The app includes 1400 animated signs and their combinations, divided into 28 thematic lessons, covering the alphabet, grammar, and common phrases used in Russian Sign Language.

The app also features a testing system based on the spaced repetition method, where signs are presented for review at specific intervals to improve retention. Users can search for signs and sort them alphabetically or by learned, needs review, and favorite categories. The app can also be used as a sign language dictionary.

To keep users engaged, the app offers various achievements for speed and persistence. Additionally, there are no ads, purchases, or unnecessary permissions required to use the app. Finally, the app works offline, so an internet connection is not required to use it.