@Bill BleichI think the right software really depends on the features (and budget) you are looking for.Is it mainly accounting you are looking for? 

Many members are experts in their respective fields related to real estate investing, whether that is real estate brokerage, wholesaling, flipping, buy and hold, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.There are some pretty cool discounts on various products and services offered as Perks to BP members that you might want to check out: https://www.biggerpockets.com/perks/proIf you haven’t checked it out already, the Bigger Pockets blog features links to their awesome podcast and many great articles: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

I have the same tenant I started with in 2014, and the interior of the house could easily be featured in a home magazine!

Many members are experts in their respective fields related to real estate investing, whether that is real estate brokerage, wholesaling, flipping, buy and hold, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.There are some pretty cool discounts on various products and services offered as Perks to BP members that you might want to check out: https://www.biggerpockets.com/perks/proIf you haven’t checked it out already, the Bigger Pockets blog features links to their awesome podcast and many great articles: https://www.biggerpockets.com/renewsblog/I really like the alerts feature that can quickly guide you to current topics that might interest you: http://www.biggerpockets.com/alertsThere are a few self-contained guides that you can access here: https://www.biggerpockets.com/guides

I am thinking of organizing game night featuring Robert Kiyosaki's Cash Flow game.

I really like the look and features of AppFolio but they would not budge from their 50 Unit minimum so I am back looking for the right software.  

However, I can’t find this calculator feature on the app...

For example, if you are looking to connect with other members near you, want to learn from people in a specific area you’d like to invest in, or have a desire to find people interested in certain topics, you could start your search here: https://www.biggerpockets.com/search/usersI really like the alerts feature that can quickly guide you to current topics that might interest you: http://www.biggerpockets.com/alerts

For example, if you are looking to connect with other members near you, want to learn from people in a specific area you’d like to invest in, or have a desire to find people interested in certain topics, you could start your search here: https://www.biggerpockets.com/search/usersI really like the alerts feature that can quickly guide you to current topics that might interest you: http://www.biggerpockets.com/alerts

One of it's internal features is a skip tracing service.