When I started adding rentals, I kept it pretty simple: spreadsheets were my main tool for tracking cash flow, loan balance, and equity growth.

@Caleb Genry yet another request for your time tracking sheet if you don't mind. 

Track multiple units in a given property.Did needs drastically change?

Quote from @Joe Steinheiser: Besides just using a spreadsheet, are there any good tools for expense tracking?  

Is it just Excel/Google Sheets, a time-tracking app, or something else?

@Sebastian Clutch if you are at a PM company and looking to track and manage both residential and commercial assets, and leasing leads that come from them then I'd recommend you check out Hemlane.com they can handle both asset types, you can move applicants and tenants around in the assets, and its an overall great hub for all things management.  

I’m curious to hear from others who are actively pursuing or already tracking their Real Estate Professional (REP) hours.Which platforms or tools do you find yourself doing the bulk of your real estate work in (e.g. property management software, spreadsheets, CRMs, deal analysis tools, etc.)?

I think Buildium is a minimum of $50/month.We've looked at 10+ software packages and NONE of them are perfect:( They all have their strengths & weaknesses, so it's really a tradeoff in the end.Check if any of these may work out better for you:Doorloop, Hemlane, Innago, RentRedi, Stessa, Avail, Apartments.com, TenantCloud, TurboTenant, BuildiumMay I ask what specific application data fields you want? 

Hey Paloma,Congrats on the first BRRRR—that first project always feels a little like controlled chaos, so getting your tracking system right now will save you big headaches later.Here’s what’s worked well for us when we lived on-site during rehabs:1.

When I was an agent I would often track properties that I considered to be "MLS gems" properties that where in need of an update or serious repairs.