Comment by chrsstrm

I built https://invoicepad.app which is a free, completely in-browser tool for creating invoices, estimates, and quotes. Yes, similar apps have been posted here before, but none were built the way I envisioned, so I made my own. The key difference: all invoice data is stored in the URL hash, not the querystring. This is important because querystrings are sent to the server with every request, while hashes stay local to your browser. This means I can never see your invoice data, unlike other similar apps. The workflow is simple: use your browser's bookmark manager as your invoice filing system. Or if you want to keep it offline, just copy and paste invoice URLs into a text document for storage. I’ve also included helpful features like saved profiles to save on repeated data input. The next step is to finish working on a browser extension (v1 is being tested) to make bookmarking, editing, and saving changes even easier, that is if I ever stop being distracted by other side projects.