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Good Grapher - scientific graphing calculator app for iPhone and iPad


4.4 ( 9904 ratings )
Productivity Education
Developer: Iurii Mozharovskyi
Free
Current version: 3.3.3, last update: 7 years ago
First release : 19 Feb 2011
App size: 10.13 Mb

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. Its my favorite app now ) Functionality and usability is on top level."

SCIENTIFIC CALCULATOR:
- 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

2D GRAPHING CALCULATOR:
- 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

3D GRAPHING CALCULATOR:
- 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

MATH SOLVER:
- 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

MAC APP STORE
Good Grapher is also available on the Mac App Store.
See www.goodgrapher.com

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

Pros and cons of Good Grapher - scientific graphing calculator app for iPhone and iPad

Good Grapher - scientific graphing calculator app good for

Wonderful app, will definitively buy the pro version at some point, to support the developer.
Great Tool. Great functionality. Great and intuitive Interface. Will buy the Pro Version.
It works, and its great... The only downside is that the scale is difficult to set, and they need to make an upgrade that is iPad compatible!! Other then that, great!!!
Its handy and it works perfectly, and its free!! Adding some more functions would be great
This is the best calculator available for the iPhone, no question. It does everything and it has the running thread of all past calculations performed.
Love the interface Wish my music did not cut out when it opens Great value

Some bad moments

Ive used this for Calculus 1 and 2 and Electrical Physics and it has been great and is much easier to use than my TI graphing calculator. My only complaint is that about 1% of the time it just doesnt calculate correctly and I have to go back to my TI-83. Otherwise, I love it.
Its a great app but make the system solver have subtraction as well b/c i keep getting wrong answers
This app has saved me from having to purchase an expense graphing calculator. Im more than satisfied with this calculator.
This is honestly the best graphing utility out there for iOS. I downloaded a few to see which ones could plot simple 2d graphs and found that not only did this run fast on my slow device, but it also has lots of other features that are helpful too! This is definitely a great app, and if you are looking to get a graph plotter or something, then get this! It even has 3d plotting!
Stopped working and just crashes, no x variable on the calculator
is a very useful one for everything, to be honest. I use it for trigonometry mostly but you can use it for many other things! Id recommend it as itll get all those nasty functions out of the way.

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