Mobile Calculus

MoCa is a simple computing environment based on a Java / C# like syntax programming language. MoCa allows write a program, run it, and analyse the results in frame of the same application; it allows implementing algorithms of very different level of complexity - from simple formulae to sophisticated methods (via interfacing with external custom libraries).
Structurally, it consists of three parts: code editor, alpha-numeric output console, graphical output tab.
You can find more on mobilecalculus.com