I built FlowDesk because I wanted a lightweight freelancer command center that didn't require a backend, a database, or even a signup. It handles invoices, client management, and financial reports entirely in LocalStorage.

Technical bits:

100% Client-side: All PDF generation and state management happen on the device. Privacy as a Feature: Zero data is sent to servers. I used Vercel Serverless only for the Stripe signature verification. PWA: Fully functional offline via Service Workers. No-Signup Approach: I believe for a lot of solo-freelance work, a traditional account is overkill and a privacy risk. I'd love to hear your thoughts on building "backend-less" apps. Is LocalStorage enough for professional work, or is the risk of losing data too high for this use case?