Check out JSXGraph: http://jsxgraph.uni-bayreuth.de/wp/ http://jsxgraph.uni-bayreuth.de/wp/ It's mobile friendly so long as the user's browser supports canvas

Check out JSXGraph: http://jsxgraph.uni-bayreuth.de/wp/ http://jsxgraph.uni-bayreuth.de/wp/ It's mobile friendly so long as the user's browser supports canvas (in my experience with it). It supports multi-touch devices too, but I haven't verified that.