Google Sheets is free, familiar, and genuinely fine for a handful of rows. Almost every creator manager starts here, and there's nothing wrong with that.
The problem shows up later: a formula breaks when a collaborator inserts a row, a follow-up gets buried because nothing reminds you, and “Nike” ends up spelled three different ways across old deals. None of that is a Sheets problem exactly, it's what happens when a general-purpose grid has to act like a deal tracker.
A manager who posted about this recently described her actual setup: Gmail, a spreadsheet, her notes app, and three DM threads open at once, just to track one deal. She missed a brand follow-up because it got buried in her inbox. That was a real paycheck, gone.
That's not a story about a bad manager. It's what happens when the tool tracking the money has no idea what a “deal,” a “commission,” or an “overdue payment” actually is. A spreadsheet will hold whatever you put in it, and remind you of nothing.
Antymo starts from the other direction. The pipeline, the commission math, the reminders, they're already built for exactly this job. You stop maintaining the tracker and start using it.