To simplify that, I built PlainInvoice.com — a minimal invoicing tool designed for freelancers and small teams. It's clean, fast, and doesn't require sign-up to start.
Some features:
Generate invoices instantly (no login needed)
Save clients, track total billed and actual received (with multi-currency support)
Upload attachments (like receipts or contracts)
Add teammates or accountants with viewer-only access
Works well for solo folks who just want to stay organized without bloat
Here’s a short walkthrough video: https://youtu.be/b3ywvs-8nYM
It’s free to use for now. I built it for myself but figured it might help others too. Would love your feedback or suggestions!