As far as rents, you can see what is listed for rent on Zillow or spring for a rental app that will aggregate all the information and give you averages in the area.

Eg they borrow at 4% and receive say 7% giving them a profit of 3% for no money down but a little time for the loan app plus the risk associated with repaying the loan if it goes belly up - though with 20% of my cash down the risk is low for them.  

Good luck on your web development app.

I also am a huge podcast addict (also the name of my favorite podcatcher app). 1.5x speed, more info in less time except for music and motivational.80% is investing (BP, CFD, a few others that are just okay so far), 15% marketing (various), 5% music, motivation (Brendon Burchard), and personal interest.I'm going out on a limb here with this one, but I enjoy listening to Simon Black on Sovereign Man.

I use mobile apps such as Redfin and Realtor.

I've used the thumbtack app to get a lot of subs out to a house, and a couple of them have worked out well.  

We have used big banks and the features with the banking apps are great and timely.With the smaller banks you have more of a personal relationship with the banker.

Once I received CASH $35 app fee I asked them for previous LL info.

I have attended a couple of networking events in The Woodlands I found on the meetup app.

The only other suggestion I would have is have someone else other than the tenants at the showing and only collecting money at move in (except app fees).