Algebra Reference: 84 Formulas

A free, offline Algebra reference with 80+ formulas. Just install and start using.

Algebra Reference/Cheatsheet is a clean, fast, offline algebra reference on Android — every formula, rule, and identity you'll ever need, beautifully typeset and instantly searchable.

Whether you're a student cramming for an exam, a teacher prepping a lesson, or an engineer who just needs to remember the quadratic formula, this app is built to get you the answer in seconds.

14 topic categories:

Basics & Properties — order of operations, commutative/associative/distributive laws, absolute value, number sets

Exponents — product, quotient, power, negative, zero, and fractional exponent rules

Radicals — product/quotient rules, rationalising denominators, conjugates

Polynomials — special products, binomial theorem, cubes

Factoring — GCF, difference of squares, trinomials, sum/difference of cubes

Linear Equations — slope, point-slope, standard form, distance, midpoint, parallel/perpendicular

Quadratic Equations — quadratic formula, discriminant, vertex form, sum/product of roots, completing the square

Inequalities — sign-flipping rule, absolute value, triangle inequality

Functions — composition, inverse, even/odd, transformations

Logarithms — product, quotient, power rules, change of base, natural log

Systems of Equations — substitution, elimination, Cramer's rule, determinants

Sequences & Series — arithmetic, geometric, infinite geometric sums

Complex Numbers — i powers, addition, multiplication, conjugate, modulus, division

Matrices — addition, scalar/matrix product, determinant, inverse, identity

3 built-in quick solvers:

Quadratic Solver — input a, b, c and instantly see real or complex roots plus the discriminant

Slope, Distance & Midpoint — enter two points and get all three at once, plus the line equation

Percentage Calculator — percent of a value, percent increase, and percent decrease

Designed for real use:

Save formulas — bookmark anything for one-tap access later
Lightning search — find any formula across all topics
Dark mode — automatic and manual
Adjustable formula size — small, medium, or large math rendering
Multilingual — English, Spanish, French, German, Portuguese (auto-detected)
Real math typesetting — formulas rendered with KaTeX, not blurry images
No sign-up — open the app and you're working

Completely free.

Whether you're studying for the SAT, ACT, GCSE, A-Levels, IB, or just trying to help your kid with their homework, this Algebra Cheatsheet keeps the math you need exactly one tap away.