About JWorld

1. Mission & Philosophy

We believe in purposeful simplicity: software that delivers immediate value without friction, bloat, or intrusive sign-up forms.

• Focused & Dependable: Products designed to solve specific daily questions in seconds, built with clean interfaces and reliable logic.
• Privacy-First by Architecture: We reject unnecessary personal data collection. Calculation engines run client-side in the user's browser without transferring private entries to our servers.
• Everyday Practical Utility: From recycling sorting guides and social etiquette estimators to unit converters and casual puzzles, we make daily routines smoother.

2. Engineering & Technical Architecture

Our infrastructure is designed for low latency, zero unnecessary footprint, and maximum availability:

• Global Edge Infrastructure: Hosted on Cloudflare Pages and serverless Workers, ensuring sub-second response times worldwide with 99.99% uptime.
• Client-Side Processing: User preferences and inputs stay sandboxed within browser local storage, protecting user sovereignty.
• Multi-Platform Distribution: Responsive web apps engineered to adapt seamlessly across desktop browsers, mobile devices, and platform ecosystems like the Toss super-app.

3. Product Ecosystem

• Haru Web Tools (tools.jworld.dev): Over 17 browser-based tools including age calculators, wage estimators, size charts, and household guides with zero installation.
• Toss Mini-App Fleet: Over 40 everyday utilities and casual logic games (such as Haru Block) operating inside South Korea's premier financial super-app, Toss.
• Cultural & Travel Guides (seoul.jworld.dev): SEOUL TRIP NOTE, delivering curated local travel tips and cultural insights to international visitors.

4. Business Transparency & Contact