Any suggestions from landlords on the best app or tool to accept/process monthly rent payments via credit cards from tenants? 

I highly recommend Meetup, a website/app where you can join groups of interest.

I don’t see how it would be if I’m trying to buy his property.Jason, I now deployed apps on my landline as well as my cell phone numbers blocking cold callers.

And to answer your question, this app may or may not be a separate from your underwriting one.

I think your funds could be better utilized on picking up lists of properties that are about to turn, and acquiring some of the apps that are most advantageous to vacant/distressed homes.

You could invest in Propstream, Propelio D4$ app, and an Investor Carrot site for a total of ~$225 which will save you a lot of time and generate some leads through SEO (via Investor Carrot Site).

Your lender can run both loan apps. at the same time, however you will have to count the up coming purchase and its  additional expenses into the refinance of the existing home. 

It connects with the Zillow 3D home app so once you are done shooting it will publish directly to Zillow!

In case you dont want to spend money on new security system you can download an app called ALFRED and it turns your old cell phones into security cameras.

Zelle - It is free, fast and supported by all the major banks and is likely already a part of your bank app.3.