Download of MathViz 1.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program is included in Design & Photo Tools.
The unique identifier for this program's bundle is com.AndersOhlsson.MathViz. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The following version: 1.0 is the most frequently downloaded one by the program users. This free software for Mac OS X was originally designed by Anders Ohlsson.
From the developer:
MathViz allows you to visualize any function of two variables y=f(x, z) in brilliant colors.
There are a couple of pre-built functions, and you can add your custom function and visualize it.
You can rotate around all 3 axis (X, Y and Z) as well as zoom in and out using the controls.
You may want to check out more Mac applications, such as 3D Image Commander, UnCoverIt or TurboCAD Mac Designer, which might be related to MathViz.