Check any link before you click — AI safety scanner + 3 free dev tools for developers

Hey IH! 👋

I'm a solo developer from Seoul, South Korea. I've been building micro-SaaS products — started by going door-to-door pitching QR review tools to restaurant owners. Now I'm going global.

## What I built

ClickVolt (https://clickvolt.app) — an AI-powered URL safety scanner.

Paste any link → get a safety score (0-100), AI summary of what the page does, and a safe wrapped link you can share.

## The twist: 3 free dev tools

Along the way, I built 3 developer tools that are 100% free, no signup, no limits:

1. Repo vs Repo — Compare any two GitHub repos side by side (stars, commits, releases, languages). Pre-loaded with React vs Vue, Next.js vs Remix, etc.

2. Repo Radar — Browse popular open source tools across 20 categories.

3. Deploy Checker — Enter any URL, get a production readiness audit (SSL, SEO, OG tags, performance).

## Numbers (keeping it real)

- Revenue: $0

- Users: basically just me

- Tech: Next.js 16, Supabase, Vercel, Claude API

- Cost: ~$15/mo (domain + minimal API usage)

## What I learned

Free tools that solve small everyday problems are the best marketing for your main product. I use my own dev tools more than the scanner itself.

Would love feedback — what would make you actually use these tools?