No loan app --- they only accepted cash payment.

To start investing through an app would you recommend robinhood or firsttrade?

If you are thinking of creating a meetup event check out the Meetup App in your area to see what is going on currently, what value your event would provide and how can you create value for experienced and newer investors

Plus they have an app which my tenants under Cozy complain that it doesn't have. 

@Tom Ristau Hi Tom, I will check out the app you suggested.

What website or app should I visit to get connected with potential landlords?

You can find a few listed on the Meet-Up app for starters. 

Yes, I am a local(ish), I have been living here since elementary school, I didn't go to App but my best friend growing up did.

What you are proposing is called mortgage fraud, so the answer is no.As to calculating your mortgage, use any mortgage calculator (app on phone or google one).

I was having trouble joining it in the Meetup app last night, but I will give it another try.