A year ago I had a problem. Every time someone asked me "is mining still profitable?" or "what's my impermanent loss?" I'd find five different calculators across five different sites, each missing a feature, slow on mobile, and crowded with popups.
So I built a site for it. Then another. Then a hundred.
Today CryptoCalk has 100+ specialized crypto calculators running in 6 languages, served as static HTML from a CDN, no signup, no data leaving the browser. This is the technical story — what worked, what broke, and what I'd do differently.
TL;DR
Stack: Astro (SSG) + vanilla TS + plain CSS
