There are advanced professional versions of Diamond Calculator: DiamCalc Pro and DiamCalc Color.
The main difference of DiamCalc Pro version is the additional option to vary any two proportions of the cut and estimate quality metrics for these sets of proportions, to create optimization charts from various cut performance data for a range of chosen cut proportions.
The advanced version DiamCalc Pro was developed to help design new cuts and optimize existing cut proportions to achieve the best cut qualities. DiamCalc Pro software aids quantitative and qualitative cut performance assessment by outputting into simple text reports that are powerful when made into graphical charts 2D and 3D, and images presented in 2D html tables with selected proportion ranges.
For example, the chart is created by Golden Software Surfer from data obtained by DiamCalc Pro: