NOI vs cash flow analysis website

[Ismael Ayala Jr.]

I watched a YouTube video recently(my watch history was off, smh) and I accidentally backed out of the screen and lost the clip. 

I understand BiggerPockets has calculators, an exhaustive list at that. However, I'm looking for a website that does a NOI, cash flow analysis SIDE by SIDE comparison. The website allows you to input your properties/portfolio into the data base, and interchange different scenarios. Ex: You own 5 properties. You can input and sell one property to pay off 2 other properties. And it will give you a side by side comparison of your decision to either stand pat or go through with the transaction. By comparing NOI, cash flow, cap rate, etc.

Does anybody have an idea, which website it could be? I'm sure someone here uses that particular website. I can't remember the name, but if someone post's the website, Im pretty sure I'll remember. It was a unique website name that you wouldn't associate with financing.

Thank you in advance!