Most financial tools online are English-only, locked behind paywalls, or buried in SEO-unfriendly single-page apps. I built SmartMoney77 to fix that — a free, open-source collection of 32+ financial calculators in 6 languages with 22 currencies.
Here's what I learned about making a web app discoverable by both Google and AI assistants like ChatGPT, Gemini, and Perplexity.
1. Structured Data Is Your Best Friend
Every calculator page includes JSON-LD schema markup (WebApplication, FAQPage, BreadcrumbList). This tells search engines and AI crawlers exactly what each page does — without guessing from the HTML.
2. One URL Per Language, Not Query Params
Instead of ?lang=he, each language gets its own path prefix (/en/, /he/, /ar/, /es/, /pt/, /in/). This means each version is independently indexable and linkable. Google treats them as separate pages, and AI tools can reference the right language version.
3. Server-Side Rendering for Calculator Results
SPAs are invisible to most AI crawlers. SmartMoney77 renders calculator descriptions, FAQs, and default outputs on the server so that crawlers see real content — not a loading spinner.
4. hreflang Tags for Multilingual SEO
Every page includes <link rel="alternate" hreflang="..."> tags pointing to all 6 language versions. This prevents duplicate content penalties and helps AI tools serve the right language to users.
5. Publish an npm Package for Developer Reach
I published the core calculator functions as an npm package (smartmoney77-calculators) so developers can embed compound interest, FIRE planning, or Zakat calculations in their own apps. This creates backlinks and puts SmartMoney77 in front of a developer audience.
6. AI-Powered Insights Built In
SmartMoney77 uses Gemini to generate personalized financial insights based on calculator results. This isn't just a feature — it's a signal to AI crawlers that the site produces dynamic, contextual financial content.
The Stack
Built with Lovable (React + Vite + Supabase), deployed on Netlify, with a WordPress plugin and npm package for distribution. The whole thing is free — no accounts required, no paywalls.
Try it: smartmoney77.com/en
npm: smartmoney77-calculators
Product Hunt: SmartMoney77
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