He isn't selling them any longer, but there are some substitutes out there. I always ran both the OCC program on some, and Richard Insley's APRX for loans. With the APRX I could also print a tape showing input and output and attach that my workpapers.
For DD I used the same type of calculator from promsoft.com. They also have loan calculators.
The APRX was better for me than the OCC program because there are assumptions made in the OCC program that are different than in the APRX. This dealt with odd days and the APRX matched our BankersSystems program and mainframe.
_________________________
AndyZ CRCM
My opinions are not necessarily my employers.
R+R-R=R+R
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell