Four lightweight tools that run entirely offline in your browser: professional invoice generator (print/PDF), proposal generator with scope and pricing, hourly-rate calculator covering expenses/taxes/savings goals, and a billable-hours time tracker with CSV export. No signup, data stays local. Free tools plus a complete $12 kit.
I kept watching freelancers lose money by underpricing and spending hours on admin instead of paid work. Invoicing templates broke, proposals took whole evenings, and nobody knew their real minimum rate. So I built four small tools that fix exactly those jobs and work offline.