most software i see today already has this feature built in. 

Changes in the prime rate do not directly affect other types of mortgages, but the same factors that influence the prime rate also affect the interest rates of mortgage loans.principalThe amount borrowed or remaining unpaid.

I am buying to rent out and wonder how this influence the rentability of the properties.

(PS - don't forget the influence of the local Historical Commission, aka the Hysterical Commission)That said, renovations make the most sense when they are similar in the level of finishes to the homes around them.For example, Brockton (especially center-east) is an area that you would expect Kenmore or Frigidaire. 

I participate in several software beta testing groups and all of them have forums for users to suggest features and fixes for future updates, so, I would like to start a discussion about Future Features for these calculators. 

You should also have your own sphere of influence, and find a niche to generate your own leads that match your personality type.

Looking for help finding simple pro forms software to analyze business model consisting of purchasing 5-10 single urban homes one at a tIme, rehabbing and renting all using line of credit and cash, the packaging in a bundle and refinancing for 5-15 year hold.

Ma & Pa investor don't know how to work the market (which has volatility, "flash crashes", hacks, hedge fund manipulation,) and plenty of outside influences outside of their control, that limit their growth.

@Mark Danforth I think what confuses people about "AI" is when it failed to emerge certain people simply moved the goalposts and started calling expert systems and other sophisticated software "AI".

They promote their software and the metrics that go along with it.