How it works

Hop on a train, open this app, and watch your speed in real-time. We use your phone's GPS to measure how fast you're moving—the same technology that powers navigation apps. Works on buses, cars, and ferries too!

Accuracy notes

• 📡Works best outdoors with a clear view of the sky
• 🚂Speed readings may be inaccurate when stationary or moving very slowly
• 📱GPS accuracy varies by device—newer phones generally have better GPS chips
• 🚇Tunnels and underground sections may have limited GPS signal

About

A simple speedometer for curious train commuters. Free, ad-free, and open source.

This is a hobby project for fun—don't rely on it for anything serious.

Install as an app

You can install this website as an app on your phone. It'll appear on your home screen and work even when you're offline (great for train tunnels!).