The reference book includes a theory definitions and formulas of the school-level algebra and calculus. It is useful for study and test preparation. Can be used as a cheat sheet with a quick search and app close button.

Main features of the program:
✔ detailed explanation of all formulas
✔ quizes with detailed explanations
✔ high-quality images
✔ quick search
✔ custom font size
✔ night mode
✔ adjustable button for program quick closing
✔ support several languages (English Russian Ukrainian)

The following topics are covered:
● common fraction
● exponents and roots
● short multiplication formulas
● algebraic equations
● logarithm
● numerical sequences and progressions (arithmetic and geometric)
● trigonometric functions (sine cosine tangent cotangent secant cosecant)
● trigonometric identities
● trigonometric equations
● inverse trigonometric functions (arcsine arccosine arctangent arccotangent)
● graphs of functions
● derivative of a function (table of derivatives)
● definite and indefinite integrals (table of integrals)