TouchPlotLite

TouchPlotLite is a free counterpart to TouchPlot, and as its elder brother, allows you to plot up to three functions curves (and one derivative), parametric curves (polar and cartesian), equations, inequalities solutions, surfaces with equation z=F(x,y), differential equations solutions...

As TouchPlot, one can very easily locate and efficiently calculate zeros, extrema, intersections, and definite integrals, observe in live how functions, differential equations solutions are modified with adjusting formal parameters with sliders, display first terms of iterative sequences...

The adaptive algorithm used in drawing curves gives superior accuracy to every other grapher in the Appstore.

Extensive documentation is included in the application (in english and french)

More extensive documentation is available on the touchplot website, including tutorials, and some example activities to be done using TouchPlot or TouchPlotLite.

I urge you to do them (as well as the tutorial exercices to get accustomed to the formula editor) to get an idea of the power of TouchPlot, be it Lite or not...

Note that the absence of parenthesis on the keyboard is a feature, not a bug, and it will not deter you from entering as complex a formula as you might want, provided you follow the directions in the embedded documentation and the TouchPlot website.

Note that only h and polar curve definitions are user-editable in this version of TouchPlot, the other definitions may be chosen in a provided examples list. The full version of TouchPlot allows one to edit every function and manage libraries of user-defined functions.