Building a 15-tool marketing calculator platform with $0 hosting costs

Hey Product Hunt! 👋

I wanted to share what I've been working on: FinCalcHub Marketing.

It’s a suite of 15 premium business and financial planning calculators built specifically for growth teams, marketers, and founders who need quick, precise math without the friction.

Instead of building a traditional heavy backend, I decided to build this platform to run 100% client-side in the browser.

Why I built it this way:

• Zero Infrastructure Expenses: Running entirely on static client-side code means hosting costs stay at $0, even during high traffic surges.

• Complete Data Privacy: Since financial data is highly sensitive, users can run calculations knowing their metrics never touch an external server or database.

• No Paywalls or Sign-up Gates: Users get instant utility without being forced into an email collection funnel.

The tools handle everything from ROAS modeling to client-side data exporting (PDF/CSV) entirely in the browser.

I’m sharing this here to get your honest feedback! Check out the site at fincalchub.xyz and let me know what features or specific calculators you think I should add next.