Graphmatica is a powerful, easy-to-use, equation plotter with numerical and calculus features. Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations. Up to 999 graphs on screen at once. Offers copy to clipboard (bitmap and vector formats), graphical and numerical display of tangent lines and integrals, on-line help, and demo files. In summary, a great tool for students and teachers of anything from high-school algebra through college calculus.

Current platforms

Windows screen shot

Version 2.3 for Windows

This version works on all modern 32-bit and 64-bit Windows systems: Windows 2000, XP, Vista, and Windows 7/8.x. It shares the same rock-solid core technology with the older versions, but also supports the modern conveniences you've come to expect from modern Windows applications like support for long filenames, a standard graphical toolbar, and HTML help, plus new features like data plotting/curve fitting and support for implicit functions.
Mac OS X screen shot

Version 2.3 for Mac OS X

System Requirements: Intel-based Mac runing OS X 10.6 (Snow Leopard) or later.
iPad screen shot

Version 2.3.0 for iOS

System Requirements: iPhone 3 or newer, iPod Touch 3rd gen or newer, or iPad running iOS 5 or later.

Potential future platforms

Maybe one of these days I'll get around to putting a Linux partition on my hard drive...
I'm currently investigating whether it is feasible to run the core Graphmatica C code inside a Jave UI on Android. If so, maybe we'll see a version for Android phones and tablets (Nook, Kindle Fire, Galaxy etc.)
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kSoft, Inc. Last updated: Tue 11 Feb 2014