A converter you can just use.

Xchange is a currency converter with no sign-up, no login, and no account of any kind. Open it, convert, close it. Nothing about you is stored.

Built solo for Hackyard Yard #1, themed around zero-account tools. Rates come from exchangerate-api.com's free tier. The insight text under each conversion is generated locally from simple rate heuristics, not a live AI call. Kept that way on purpose, since a browser-side app has nowhere safe to hold a real API key.

Source is open on GitHub.