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Good Grapher - scientific graphing calculator

By Iurii Mozharovskyi

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Good Grapher™ - great and very powerful scientific graphing calculator. It will become your reliable assistant from elementary school to university and work.

Customer reviews:
"Amazing app! I love it. It has Many great features that beat my T83"
"Best calculator. It's my favorite app now ) Functionality and usability is on top level."

- History tape
- real and complex numbers
- radians and degrees angle modes, support for minutes, seconds, grads
- constants: astronomical, atomic, electromagnetic, mathematical, physicochemical, universal
- functions: sin, cos, tan, cot, sec, csc, sinh, cosh, tanh, coth, asin, acos, asec, acsc, atan, acot, asinh, acosh, atanh, acoth, log2, log10, ln, logn(n,x) (log x with base n), √, ³√, abs, avg, ceil, floor, round, deg2rad, rad2deg, max, min, sgn, lcm, gcd, nCr, nPr, arg, real, imag, conj, polar
- operators: +, -, *, /, % (modulus), ^, ! (factorial), ' (minutes), " (seconds), {grad}
- ← - assignment operator and A, B,…,J variables for values storage
- copy/email calculations

- carefully-designed graph visualization with multi-touch support (pinch to zoom and drag to scroll)
- cartesian y(x) and x(y), polar r(θ) graphs (parametric x(t)y(t) and implicit in Pro version)
- inequalities drawing (in Pro version)
- function tracing and automatic min/max, zeros, intersections scanning for all function types
- intersection discovering between different function types, e.g. between cartesian y=x and polar r=1
- unlimited number of functions can be drawn simultaneously
- standard, trigonometric and logarithmic axes
- proportional and non-proportional scaling
- customizable graph colors
- table of graph values
- copy, save, email screenshot

- pinch to zoom and drag to rotate
- cartesian x(y,z), y(x,z), z(x,y), cylindrical x(p,φ), y(p,φ), z(p,φ), spherical r(θ,φ) graphs (parametric xyz(u,v) and implicit in Pro version)
- inequalities drawing (in Pro version)
- points, lines, surface drawing modes
- configurable graph bounds
- copy, save, email screenshot

- polynomial solver:
2x - 3 = 0 (linear)
3x² + 4x + 8 = 0 (quadratic)
5x³ + 2x² - 4x + 2 = 0 (cubic)
7x⁴ - 2x³ + 3x² + 2x - 1 = 0 (quartic)
- system of linear equations solver
with 2 unknown
2x - 9 = 9
3x + 4y = -13
with 3 unknown
-5x + 4y + 2z = -4
7x + 2y + 3z = 19
3x + 5y - 1z = 10

Good Grapher is also available on the Mac App Store.

Visit for more screenshots, demo videos, details and news. Feel free to contact us for any questions and suggestions.

What's New in Version 3.3.0

- iOS 8 support
- minor UI changes
- bug fixes


iPhone Screenshot 1
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iPad Screenshot 1
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Customer Reviews


It helps me daily in all my highschool math that isn't hard just time consuming and greatly reduces work load/time.

Love it

I always dread changing devices because a good scientific calculator is must for me, and hard to find. This does the operations I need and has impressive 2&3D graphics to boot.

Kudos on a great app.

Perfect Calc Tool

Quickly and easily plot any curve! Does everything I need a calculator too. Helped me soar through calculus 1-4. Couldn't think of any needed improvements.

Good Grapher - scientific graphing calculator
View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Education
  • Updated:
  • Version: 3.3.0
  • Size: 3.7 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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