Hi Product Hunt 👋 I kept glancing at my phone wondering how fast I was really going, and every answer meant installing yet another app full of ads and permissions. So I built the version I wanted: open the page, tap allow, and your live GPS speed is right there. No download, no account, and your location never leaves the device. The fun part was the accuracy rabbit hole. Your car's dashboard reads 1 to 3 percent high on purpose (regulations forbid under reading), so GPS almost always shows you a bit slower than your dash. The web tool lets you see that gap for yourself. It works in any browser in MPH or KPH. There's also an iOS app for people who want trip recording, a HUD mode and live maps, but the browser tool is completely free with nothing to sign up for. Happy to answer anything about GPS speed accuracy, the Doppler math behind it, or how it's built. What would you want a speedometer to do that yours doesn't?

GPS Speedometer

Live GPS speed in your browser, no app, no sign-up

Live GPS speed in your browser, no app, no sign-up