1,000+ downloads. Wow 🎉🎉🎉🎉.

For a massive tech company, that’s a rounding error. But for a free, open-source project built on nights and weekends? It feels absolutely massive.

I originally built Invoiso because I was tired of how complicated invoicing had become. It felt like every tool out there wanted me to sign up for a monthly subscription, create an account just to test it, and hand over my data to their cloud.

I wanted something different. I believed in a simple idea: your business data should stay with you.

No forced cloud. No monthly fees. No gatekeeping. Just a dependable desktop app that lets you get your work done, save your PDFs, track your payments, and go home.

What actually is Invoiso?

It’s a completely free, offline-first invoice and billing app for Windows, Linux, and macOS. I built it using Flutter and SQLite, keeping it lightweight, fast, and local.…