This would simulate the same seller-financing terms we've negotiated, and without a chunk of equity on top.

If you are very good with Excel or similar software and understand the logic of the equations, you can simulate what the calculator does with graphics and everything (not worth the time thought if you don't know what you are doing).  

I would use the CreditWise app (not overly accurate) to run some simulators and see what you can do to bring that up.

. $3,000 monthly rent appreciating at 2% per year for 10 years turns into $3,656/month or $43,782/year, but 4% rent appreciation turns into $4,440/month or $53,288/year.A calculator that has the ability to simulate various appreciation scenarios quickly is important to me, and hard to find.

Lucky for my client, I'm an independent mortgage broker, so this was all with one credit pull, but it did take about a week of mucking about, you can't run the stupid little computer test without ACTUALLY making the loan "live" in their system, and since no one understands what the rules even are, you can't simulate ahead of time. 

Here’s some information on the things that are factored in, and the importance of each:https://www.myfico.com/credit-education/whats-in-your-credit-score(Credit Karma also has an app that you can use to simulate changes to your credit profile and estimate how it might affect your credit score, up or down.

I have a program that allows high-equity property owners to sell a fraction of their properties' eventual sale price to buyers, simulating the sale of home equity.

I don't make much money and I am wondering if there are different options to simulate this strategy?

This is a tough call (and why I was looking into Harry Browne, etc)Harry Browne's asset allocation was designed (I assume) for longer-term holding and lower volatility, so it might be good to run simulations on previous periods using similar time horizons.

The situation was simul, both tenant were behind on rent which voided their existing lease.