TheCalculatorWorld: All in one Financial Calculator

Hey All! 👋 I built TheCalculatorWorld after spending way too much time on existing calculator sites that felt like they were designed in 2009. You know the ones — cluttered, slow on mobile, and built to maximize ad impressions rather than actually help you get an answer. The problem: Most online calculators either look terrible on phones or bury the actual calculator under walls of text. I wanted something fast, clean, and actually usable. What's different: • 28 calculators covering finance, health, and everyday math (compound interest, mortgage, BMI, percentage, retirement planning, and more) • Interactive charts on every calculator with year-by-year data — most free calculator sites don't offer this • Zero signup, zero paywalls — everything is free and unlimited • Year-by-year breakdown tables so you see the full trajectory, not just a final number • Mobile-first design — works great on phones (thecalculatorsite.com gets 5M+ visits/month with terrible mobile UX, so there's room here) Tech stack: Django + HTMX (for instant results without page reloads) + Chart.js (for visualizations). Hosted on Render. What's next: I'm working on adding more calculators based on what people actually search for. If there's a calculator you wish existed, drop it in the comments and I'll build it. I'd love honest feedback — what's missing? What would make you use this over the alternatives?