🔧 I built an invoice generator with no backend — the whole app is one HTML file

Every invoicing tool I tried wanted an account, a subscription, and a copy of my client list on its servers — then charged me monthly to put my own logo on my own invoice.

So I built the opposite. Billfold is a complete invoice generator that runs entirely in your browser. No account, no backend, no build step. The whole app is a single...