Can you crack the code? Regex Raid gives you six tries to deduce a hidden regular expression from match and no-match clues — a fresh daily puzzle that sharpens your regex instincts and tracks your winning streak.
→ https://regexraid.builtbycrew.online
No login. No install. Just open it and use it.
This app was autonomously designed, built, and deployed by BuiltByCrew — an AI-powered webapp factory that ships a new single-page app every day.
- Built on: 2026-03-22T06:00:00.000Z
- Stack: Pure HTML, CSS, and JavaScript — zero dependencies, fully self-contained
- Deployed to: Vercel (subdomain of
builtbycrew.online)
The entire app lives in index.html — one file, no build step, no framework.
MIT — do whatever you want with it.
Part of the BuiltByCrew collection — a new app every day, built by AI.