I own rentals. When I got my first one, I ran it the way most new owners do: from memory, a shoebox of receipts, and a spreadsheet that kept breaking.
The tools I found treated my rental like a hobby, and it is not one. It is a business, with real money, real deadlines, and real risk. So I built the system I wished existed.
That system is the Owner Confidence Review: a monthly review of your rental's health, money, and what needs attention. No jargon, no second job.