Yeah, here is the passive activity Audit Techniques Guide which is interestingly not available on the IRS website any longer.

As an investor would you find any value in this type of software?

I am currently self-managing the property but I'm considering switching to Stessa rental management software for it's advertised "Landlord Banking".

Same with iPad and cloud software. 

I spend ten minutes a month classifying and the rest is automatic.Here are some other suggestions: https://www.forbes.com/advisor/business/software/best-mileag...

Like any tool, it depends a bit on how you want to use the software.

Hello, I'm looking for bookkeeping software that works with my real estate business and can work with my personal rental properties.

If your doing it smart, your using a software, like showmojo or something that captures those looking at it.

But if i had it to do all over again growing up in Cupertino CA in the 60s I would have figured out software and computers far better than I did would be like some of my peers that truly retired many years ago. 

While real estate isn't my primary expertise, I bring some useful experience from my career, ranging from software development, data analytics, big data, AI, automation, entrepreneurship, startup creation and development, people management, project management, team building, and strategic planning.