Smashspeed

Smashspeed measures how fast you hit a badminton shuttle, from an ordinary phone video. No radar gun, no special court: you record a rally the way you already would, and it tells you what the shuttle was doing.

I founded Smashspeed and am its CEO, building it from an idea into a product players across the world use every day.

It is now used by over 57,000 players across 130 countries. In August 2025 it was #1 in Taiwan’s App Store for Sports and #4 on Google Play.