I wrote this app a number of years ago, as a quick way to generate an invoice and keep track of my collections. Over time I added importing completed tasks from Asana, Snapscan codes and a tax calculation system. The look and feel is quite old and in need of a facelift. So I’m going to start working on a version 2 to include a PWA mobile experience and better searching and sending capabilities.
I’m thinking of open-sourcing this if anyone is interested in contributing … let me know in the comments.