CAS Scientific Calculator

ŠTIMAC Studio

About this app

CAS Scientific Calculator is a computer algebra system in a clean Material You calculator. Type maths the way you write it and get exact answers: 2√2, π/6 and n(n+1)/2 rather than long decimals, with the decimal one tap away.

Letters stay symbolic, so 2x + 3x gives 5x. Fractions, roots, powers, integrals, sums and matrices are built on screen as they appear on paper.

CALCULUS
• Derivatives, including higher derivatives and derivatives at a point
• Antiderivatives and definite integrals: exact when possible, numerical otherwise
• Limits, including one-sided limits and limits at infinity
• Taylor polynomials and closed forms for sums
• Differential equations: first-order linear and separable, second-order with constant coefficients, and initial conditions

LINEAR ALGEBRA
• Determinant, inverse, transpose, powers, row reduction, rank and trace
• Eigenvalues (exact, including complex ones) and eigenvectors
• Dot and cross products, with exact or symbolic entries

COMPLEX NUMBERS
• Complex arithmetic in rectangular or polar form
• Contour integrals around circles and residues at poles

STATISTICS AND CONSTANTS
• Mean, median, standard deviation and variance, exact when the data are
• Factorials, combinations and permutations
• Normal, binomial and Poisson distributions
• Physical constants (CODATA 2022) in SI, Planck, atomic and natural units

2D GRAPHING
• Functions, equations and inequalities in x and y
• Points, lists and data tables: import CSV, add error bars, fit a function to the data
• Sliders for parameters, with play and pause
• Tap a curve to read values; shade the area under it
• Folders, notes, named lines and a legend

3D GRAPHING
• Surfaces z = f(x, y) and any equation in x, y and z, such as spheres and tori
• Cartesian, cylindrical and spherical coordinates, with your own letters
• Inequalities drawn as solids
• Export surfaces as STL for 3D printing

COMPLEX PLOTTING
• Domain colouring of f(z), with a choice of colour maps
• Draw a loop to get its contour integral and the residues inside

EXPORT AND SHARING
• Export graphs as PDF, SVG, PNG or JPG in a clean LaTeX-style look, with a live preview
• Share any answer as an image or as LaTeX
• Save graphs in the app, or as .g2d, .g3d and .gcp files to share and open on another device

MADE FOR EVERY SCREEN
• Material You colours that follow your wallpaper, in light and dark themes
• Adjustable maths and keypad sizes
• A two-pane layout on tablets and foldables
• Long-press any key for its name, formula and an explanation
• Build your own symbols: Greek and Hebrew letters, accents, blackboard bold and more

Works fully offline. No ads, no account and no permissions needed.

What’s new

Initial release