Dev.to
5/9/2026

I Built a Privacy-First Calculator Platform With Zero Tracking — Here's the Architecture
Short summary
Developer built CalcIQ, a privacy-first calculator platform running entirely in-browser with zero tracking—19 calculators, 8 currencies, offline support, $0 hosting. Architecture uses vanilla JavaScript with Service Workers and static HTML landing pages for SEO, avoiding frameworks for faster loads and smaller attack surface. Addresses 103M+ monthly calculator users with zero privacy-first alternatives, optimized for 75-85% mobile users.
- •Privacy-first calculator platform (CalcIQ) runs entirely in-browser with zero data collection or tracking
- •Vanilla JavaScript + Service Workers + static HTML chosen over React for performance, security, and SEO; infrastructure costs $0/month
- •Market gap identified: 103M+ calculator platform users with zero privacy alternatives; optimized for 75-85% mobile with 50+ countries organic reach
Generated with AI, which can make mistakes.
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