Nathan Quintin

Founder & maker – building SaaS and apps

About

Entrepreneur from France 🇫🇷 building digital products that solve real, everyday problems. I'm the founder of SportLinks, a platform connecting all of actors of sports. I also built Carnetio, a quotes and invoicing app for French freelancers. Passionate about sport, tech and design. I love turning ideas into products people actually use. Always shipping, always learning.

Badges

Tastemaker

Gone streaking

Maker History

CarnetioQuotes, invoices and payment tracking for French freelancers
Oct 2026

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Joined Product HuntOctober 26th, 2026

Forums

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15h ago

Carnetio - Quotes, invoices and payment tracking for French freelancers

Carnetio helps French freelancers and micro-businesses create quotes and invoices that follow French rules (legal numbering, VAT, Factur-X e-invoices), let clients accept quotes online, and see when each client will actually pay thanks to the Payment Radar. Also includes recurring invoices, expenses, URSSAF helpers and AI assistants. Free plan available.