Radix Scientific Calculator

Scientific Calculator gives exact answers, written the way your textbook writes them. Fractions stay fractions, roots stay roots, and every digit shown is correct.

EXACT ANSWERS, NOT ROUNDING ERRORS
• 0.1 + 0.2 is exactly 3/10, and √8 is 2√2. Fractions, roots, π and e stay exact, with the decimal alongside.
• A fraction calculator too: fractions and mixed numbers are simplified automatically.
• Switch any result between fraction, mixed number, decimal, scientific and engineering notation, and degrees-minutes-seconds.
• See up to 1,000 correct digits of a result.

TYPE IT LIKE YOU WRITE IT
• Natural textbook display: real fractions, roots, powers, logarithms and absolute values on screen.
• SHIFT and ALPHA keys with every function labelled. Hold any key to see what it does.
• History, undo and redo, variables A–F, x, y, z and memory, all kept when you close the app.
• Degrees, radians and grads.

CALCULUS AND EQUATION SOLVER
• Derivatives (d/dx), integrals (∫), sums (Σ) and products (Π) in textbook form, with exact results where they exist.
• SOLVE any equation for x.
• Polynomial equations up to degree 4 with exact roots, including complex roots.
• Systems of linear equations with up to 4 unknowns.

GRAPHING CALCULATOR
• Plot up to 6 functions. Drag to move, pinch to zoom.
• Find roots, maxima, minima and intersections, draw tangents and measure the area under a curve.
• Make a table of values for one or two functions.

12 MODES IN ONE APP
• Calculate: everyday and scientific maths
• Complex: complex numbers in a + bi and polar form
• Base-N: decimal, hexadecimal, binary and octal, with AND, OR, XOR and NOT
• Equation: polynomials, linear systems and any equation in x
• Matrix: up to 6 × 6 with determinant, inverse, transpose, rank and RREF
• Vector: 2-D and 3-D vectors, dot and cross product, length and angle
• Statistics: mean, standard deviation, quartiles and 7 regression models; paste data from a spreadsheet
• Distribution: Normal, Binomial and Poisson probabilities, and inverse Normal
• Table: tables of function values
• Graph: plotting and curve analysis
• Units: exact unit conversions in 17 categories
• Constants: 35 physical constants (CODATA 2022), checked against the NIST table

MADE FOR STUDENTS
• A quick guide on every screen, a guided tour, and an offline help centre with a worked example for every tool.
• A clear explanation whenever something can't be calculated, never a silent wrong answer.
• Useful for school and college maths, physics, chemistry and engineering.

COMFORTABLE TO USE
• Dark and light themes.
• Large text and screen reader support.
• Portrait and landscape, on phones and tablets.

PRIVATE BY DESIGN
• Works fully offline: the app has no internet access.
• No ads, no accounts, no tracking. Your history stays on your phone.