Based on the discussion on
this thread (see posts #24 and #28), I've ported Ether's/Andrew Schreiber's C code to Java, and made a GUI front-end with charting. It's not the most pretty thing ever coded, but it may help to make the calculator more accessible by non-programmers. You can find
the source code here, with
.jar file releases here.
I'd appreciate any feedback you might have.