Высшая математика справочник is a free educational app for Android users developed by MidnightDev. As the name suggests, the app is entirely in Russian and provides a comprehensive guide to higher mathematics. The app contains a significant portion of the theory of higher mathematics presented in an understandable format, with convenient navigation by sections and a search function. The app is entirely ad-free, making it easy to use without any distractions.

The app is an excellent tool for Russian speakers who want to learn or revise higher mathematics concepts. It is especially useful for students studying mathematics in higher education or anyone interested in expanding their knowledge of mathematics. The app's interface is user-friendly and straightforward, making it easy to navigate through different sections and topics. Overall, Высшая математика справочник is a great app for anyone looking to learn or revise higher mathematics concepts in Russian.