ЕГЭ Математика 2021: тесты, разборы, шпаргалки is an Android application developed by Naska and is available for free. It is an easy-to-use and convenient application for successfully passing theUnified State Exam (USE) and university exams. The app includes a detailed analysis of USE math problems, examples of problems with solutions and videos. It also has a large set of calculators such as standard, engineering, number conversion to other number systems, percentage calculators, quadratic equations, matrices, fractions, and geometric shapes areas. The app provides only the necessary and understandable theory for basic and advanced levels of math. It also includes cheat sheets with theory, graphs and formulas (which can be printed). Additionally, there are practice exam options with answers, brain teasers, and the ability to ask for help from professional tutors. The app also includes a full course of lectures and cheat sheets for university exams in the following subjects: Algebra, Mathematical Analysis, Mathematical Statistics and Probability Theory, and Geometry. All materials in the app are available offline. Let it become your reliable assistant on the way to your future education!