What is an App or membership that has been indispensable to you?

[Brenda Maddox]

Hi Everyone, 

I see these different apps and memberships to help look for homes, evaluate properties but I am too frugal to blow the money. Anyone out there have found an app or two or website that without it you wouldn't have made the money or found the investment? Would you mind sharing which ones you love even though they cost money? I am considering rentometer, deal check and foreclosure.com but I don't want to just throw money down the drain. Thanks! 

[John Underwood]

Microsoft excel. Very powerful and very flexible.  You can find templates to download to do almost anything and then customize them for your needs.

I track everything about my real estate portfolio with excel.