Keith, what app/software sends you emails with reminders?

No one I know wears a watch except a smart watch....so unless hers was an apple watch or a rolex I cannot see it having much market value at all even if it has value to her.

Download the nextdoor app.

Don't give them SASEs: if they don't like paying .50 for a stamp they can send payment VIA Paypal or some other app or they can go to your office/some other place you'll be where you're not wasting time waiting for them if they want to pay VIA cash (I don't chase rent - they send/bring it to me).Favorite lease addendums: "A range and refrigerator are provided but maintenance and repair are responsibility of the tenant and......All drain and toilet clogs are the responsibility of the tenant" are my two personal favorites.

Comparing apple to oranges.  

I am using MySudo app for all my rentals.

Haven't heard of it....I'll check it out.I've also taken a look at Cozy but it seems pretty focused on rental marketing, new tenant apps and rent collection - not so much on the bigger "management" picture.

is comparing apples to oranges.

I highly recommend downloading Audible app and getting bigger pockets book ( Investing in real estate with no money and low money down) that is a must read if you want to know all your financial options towards buying Real estate.

Then to compare apples to apples we'd need to know tax and insurance.