Serve speed gun
One number. Off the racquet.
PaceCam is a serve radar. Toss, contact, 220 milliseconds of outgoing ball — then it waits for the next toss. Nothing else.
- Behind the server — fence, looking down the court. 1× or 2×.
- Contact window — toss ignored. Peak in the first 220 ms after the hit.
- Your book — name, top speed, court, date. Lives on this phone.
