I am looking for a free GUI program I can use to graph straight lines y = ax + b with

  • linear x and y axes
  • logarithmic x and linear y axes
  • logarithmic x and logarithmic y axes

I have done so with matplotlib and Python, but now I'm interested in doing this with a pure GUI program running under macOS. I had a look at geogebra, but couldn't figure out how to do logarithmic axes.

1 Answer 1


Grapher.app has been installed by default with all versions of Mac OS since 10.4 and does what you are asking for and much more (like 3D graphs). You should find it in the Applications/Utilities folder.

Edit: While linear-linear, log-log and linear X - log Y are easy, I'm not sure how to do log X - linear Y with Grapher. I'll report back when I learn more. Otherwise you could always use Numbers which likewise comes with your Mac.

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  • Thanks! Works perfectly! Log-Lin is possible too via Menu Format --> Coordinate System...
    – halloleo
    Commented Jul 7, 2021 at 13:43

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