MathPad is simply a mathematics algorithm implementation system. As a gui application, it integrates basic to intermediate level mathematics algorithms. There's a clear-cut among the algorithms based on their distribution / areas in mathematics: Number Theory, Finance, Algebra, Geometry, etc.
Download the Jar file here: https://drive.google.com/open?id=1hiBknvTo1j4tHqBfVvYJGr_nuLB-lVKp