Calculio - Word Problem Solver app for iPhone and iPad

Calculio is an incredible math app that helps you solve problems and word problems step by step. Just open your textbook or notebook, point your camera at the problem using the app, and within seconds, youll get a solution that even a tutor would be proud of. If you want to understand any math operation, simply click on the blue rectangle for an explanation.

Currently, we cover:

WORD PROBLEMS - By Topic
- Word problems on direct and inverse proportionality (and their combinations)
- Word problems on motion
- Word problems on collaborative work
- Word problems on mixtures and solutions
- Word problems on sequences (arithmetic, geometric)
- Word problems on sets (Venn diagrams, Cartesian product)
- Word problems on combinatorics
- Word problems involving geometric calculations (perimeter, area, volume, etc.)
- Word problems on extrema using derivatives
- Specific problems (age, LCM, GCD, percentages, scale, clock hands, etc.)
- General word problems

WORD PROBLEMS - By Mathematical Operation
- Word problems leading to a linear equation
- Word problems leading to a linear inequality
- Word problems leading to a quadratic equation
- Word problems leading to a system of equations
- Word problems leading to an exponential equation/inequality
- Word problems leading to a trigonometric equation
- And more

EQUATIONS AND INEQUALITIES
- Linear equations and inequalities
- Quadratic equations and inequalities
- Product form equations and inequalities
- Quotient form equations and inequalities
- Absolute value equations and inequalities
- Irrational equations and inequalities
- Exponential equations and inequalities
- Trigonometric equations and inequalities
- Reciprocal equations
- Equations and inequalities solved by substitution
- Equations and inequalities with factorials
- Systems of equations – elimination method, comparison method, substitution method

EQUATIONS AND INEQUALITIES WITH PARAMETERS
- Linear equations and inequalities with parameters
- Quadratic equations and inequalities with parameters
- Equations and inequalities with parameters and unknowns in the denominator
- Absolute value equations and inequalities with parameters
- Irrational equations with parameters
- Product and quotient form equations and inequalities with parameters
- Power equations and inequalities with parameters

EXPRESSION SIMPLIFICATION
- Simplifying numerical expressions
- Polynomials – addition, subtraction, multiplication
- Fractions – reduction, addition, subtraction, multiplication, division
- Compound fractions
- Rationalization of fractions
- Powers – with natural, integer, and fractional exponents, with unknowns in the exponent
- Roots – with natural indices, with unknowns in the root
- Simplification of trigonometric, exponential, and logarithmic expressions
- Expressions with factorials and binomial coefficients
- Complex numbers – simplification, absolute value, exponentiation

FACTORING EXPRESSIONS
- Factoring out common terms
- Factoring formulas
- Quadratic expressions
- Tricks for factoring complex expressions