"Быстрые тесты для взрыва мозга" is an engaging Android app featuring a collection of timed tests in mathematics and the Russian language. Players tackle five progressively challenging rounds, testing their skills like oral calculations and spelling. If errors are too many, players can retry the test, while success allows them to try harder difficulties. Suitable for high school students and above, the app continually updates its test offerings and welcomes user feedback for improvements.