Some familiar names you'll see thrown around a lot: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend you search for each app online and see what they offer, how much they charge, etc.

Like use swipe or some type of app like you did for cash app.

-DL is always a great idea-App Forewarn-We use the operating  program Appfolio and they have an app we use where we can send a link to up to ten people.

For example if you borrow 300k at 9.99 with IO payments, your monthly payment would be 2497.50. 

Cash App has a fee however I'm not sure of the percent when you transfer into your bank. 

Download the free Deal Check app and start playing around with numbers and figure out how to analyze a deal.

Is there a Bigger Pockets app for the IPhone?

I tried to use the Home Depot apps camera feature that allows you to take a picture and it’ll search for a similar (or exact) product based on that but, it was a dead end lol

What apps should I use for setting up a system to invest in tax deeds?

Typically interest only for a couple years, rate a little higher but i/o payment lower.