For the solo lawyer, designer, or therapist who books fewer than 80 invoices a year and spends most evenings hand-keying them into the same five categories.
Invoices, expenses, and the year-to-date P&L live on a single page. No "modules", no left-nav, no quarterly setup wizard to dismiss.
Pick six. The app refuses a seventh. Re-categorizing an entry takes two keystrokes; the year reconciles itself as you go.
Tax season ships your accountant a flat file in the schema their software already imports. No "Pro tier" required; the export is the product.
The competition isn't another SaaS — it's a notebook and a shoebox. Beating those means looking less like software, not more.