Flight Log
RANGE SESSION

Watch the
swing.
Read the flight.

Point your camera at the swing. Flight Log reads your motion, estimates clubhead speed from real motion data, and models the ball's flight using golf-ball aerodynamics — carry, total, curve, and shot shape, per swing.

This session

View all

My clubs

+ Add club
MY CLUBS

Add a club.

Loft is the one number most golfers know off-hand, so that's all this really needs — Flight Log estimates everything else (smash factor, spin, typical launch) from it, the same way it's set up for the built-in clubs.

METHOD

How Flight Log
estimates a shot.

1. Calibrate with your club
No radar, no rangefinder — just your phone. So Flight Log uses the real, known length of your selected club as a ruler in the frame to convert pixels into inches.
2. Track the body and club, frame by frame
An on-device pose model follows your wrists and arms through the swing. Clubhead speed at impact comes from how far that point travels between frames, at your camera's real frame rate.
3. Read the ball's first instant of flight
The ball is visible for only a few frames after contact — that's true of any camera, not just a phone. Flight Log reads the launch direction and angle from that brief window.
4. Model the rest of the flight
From there, the same drag-and-lift physics real launch monitors use takes over — projecting carry, total distance, and curve from speed, angle, and spin.
Be honest with yourself about this: these are physics-based estimates from a single phone camera, not radar measurements. Expect them to be in the right neighborhood and useful for tracking trends — not Trackman-exact. Good lighting, a side-on angle, and a steady phone help a lot.
Loading model…
SETUP

Finding you in frame…

target line you ball phone low to the ground 6-8 ft behind the ball
0
Shots
—
Last
DRIVER
Straight
—yd
Carry
—yd
Total
—yd
Left/Right
Clubhead speed—
Est. ball speed—
Launch angle—
Face-to-path—
Apex height—
Calibration—
Estimate confidence: Medium — based on tracking clarity this swing.