Grapher Pro - Equation Plotter

An extensive yet lightweight math graphing calculator and equation solver.

Grapher Pro is a fast and effective equation plotter, capable of drawing any function (including complex-valued ones), solving equations and calculating expressions. Especially if you're a student, teacher or engineer, this app is made with you in mind! A wide range of predefined functions is available, including trigonometric & hyperbolic functions, polar coordinates, differentiation and more. Anything you type will be processed and displayed instantly by a powerful math engine, in both 2D and 3D modes. Furthermore, functions can reference each other and variable sliders allow for efficient visualization.

As I strive to make Grapher fit your needs, any feedback and bug-reports are greatly appreciated!

Pro version features

• Full support for complex 2D functions (i.e. plot a real + imaginary part), complex plane parametric plots and domain coloring

• Variable sliders: adjust parameters to see their effect in real-time

• Choice between light and dark theme

Curve types

• Function (e.g. parabola, sine wave)

• Polar (e.g. rose, spiral)

• Parametric (e.g. ellipse, Lissajous) on the xy-plane, rθ-plane or complex plane

• Implicit equation (e.g. conic sections)

• Implicit inequality (e.g. half-plane)

• Complex domain coloring (e.g. Riemann zeta)

• 3D function (e.g. paraboloid)

• 3D parametric curve (e.g. helix)

• 3D parametric surface (e.g. sphere, hyperboloid)

More features

• Equation solver (numerical)

• Find roots, extrema and intersections with other functions

• Complex number support

• Real-time variable sliders

• Functions can reference each other, e.g. g(x)=2*f(x+1)

• Custom math keyboard

• Auto-detect input type

• User variable support for both numbers and functions

• Adjustable parameter range (for cartesian, polar & parametric curves)

• Input history

• Plot up to 28 graphs at once

• Light and dark theme

• Differentiation (numerical)

• Trace graph

• Capture screenshots

Note: Mathematical functions should be typed by their names, for example sqrt(x) means √x. Hold a key to see all function names starting with that letter. If something is unclear, be sure to check out the 'Help' page as all details are summarized there.