Tetra Scientific Calculator

Tetra Scientific Calculator is an all-in-one scientific calculator, fraction calculator, graphing calculator and equation solver for school, university and engineering work. Enter math the way it is written in your textbook, then switch between exact, decimal and engineering answers in one tap.

Calculators included in one app:
- Scientific calculator with natural textbook display
- Fraction calculator with mixed numbers and exact results
- Graphing calculator for functions, polar, parametric and implicit curves
- Equation solver for polynomials, systems of equations and inequalities
- Calculus calculator for derivatives, integrals, sums and limits
- Matrix calculator, vector calculator and complex number calculator
- Statistics calculator with regression and normal distribution
- Programmer calculator for binary, octal, decimal and hexadecimal
- Unit converter, math and physics formulas, and chemistry tools

◉ Scientific calculator with exact answers
Fractions, mixed fractions, square roots, cube roots, nth roots, powers, logarithms, percentages, factorials and π stay exact, so √8 shows as 2√2 and 1/3 + 1/6 as 1/2. Switch any result to decimal, scientific or engineering notation. Trigonometric, inverse and hyperbolic functions work in degrees, radians or gradians, with degrees-minutes-seconds conversion.

◉ Calculus calculator
Evaluate derivatives, indefinite and definite integrals, summations (Σ), products (∏) and limits directly on the main screen.

◉ Equation solver
Solve quadratic, cubic, quartic and quintic equations (degree 2 to 5), systems of linear equations with 2, 3 or 4 unknowns, and polynomial inequalities of degree 2 to 4 with interval answers. Use SOLVE to find an unknown and CALC to evaluate an expression for new values.

◉ Graphing calculator
Plot up to 12 functions together, plus polar curves, parametric curves, implicit equations such as x²+y²=4 and shaded inequalities. Zoom, trace, find roots, intersections, minimum and maximum points, and open a table of values.

◉ Matrix, vector and complex numbers
Add and multiply matrices, find the determinant, inverse and transpose, and work with vectors. Complex mode calculates in a+bi and polar (r∠θ) form and converts between rectangular and polar coordinates.

◉ Statistics and probability
Enter data in the statistics editor to get the mean, sum, minimum, variance and sample or population standard deviation. Fit linear, quadratic, logarithmic and exponential regression, and calculate normal and binomial distributions. Includes nPr, nCr, GCD, LCM, random numbers and random integers.

◉ Programmer calculator
Convert between BIN, OCT, DEC and HEX with 8, 16, 32 or 64-bit words, and use AND, OR, XOR, NOT, NAND, NOR, XNOR, bit shifts and rotations.

◉ Unit converter, formulas and chemistry
Unit conversion for length, area, volume, weight, pressure, time and fuel consumption. Browse searchable math and physics formulas with examples and favorites. Balance chemical equations and look up atomic data for all 118 elements.

◉ Camera math (premium)
Point the camera at a math expression, crop the part you need, and check the recognized expression before it goes into the calculator. Camera math supports fractions, roots, powers and matrices, and nothing is calculated until you confirm it.

◉ Made for everyday use
Ans and PreAns, memory (M+, M−, MR), named variables, calculation history with JSON export, 10 themes, serif and monospace fonts, and a compact pocket keyboard.

◉ Private by design
No ads and no account. Calculation history stays on your device unless you export it. Calculations run on your phone; camera math and the premium purchase need an internet connection.