X-Factor analysis
Shoulder–hip separation at the top, measured in 3D from a down-the-line video — shown only when the camera angle makes it reliable.
Your swing, read frame by frame.
Film one swing on your phone and upload it.
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96.8%1
of impact frames placed within 1 frame of the true moment
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per video, and no charge if the analysis fails
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24 h
Replay videos and key frames are deleted within 24 hours.
1 Measured on 343 swings by 5 golfers (beginner to professional) from the public MultiSenseGolf dataset who were not used to train the model (face-on camera, 30 fps; October 2026).
Film it, upload it, read it.
No sensors and no special gear. A phone is enough.
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Film one swing
Down-the-line or face-on.
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We track every frame
Our models find your body and the club head in each frame.
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Read your report
An AI coach turns the numbers into plain advice.
What a report looks like
Real output from our sample swing.
From the report
Loading the sample…
Key positions
Drawn here from a professional’s swing (MultiSenseGolf data), not from the sample.
Analyze your swing
Choose a clip with a single swing. A phone video is fine.
Better video, better numbers: phone on a tripod, whole body and club in frame, good light, 60 fps if you can.
Advanced settings
✓ A written coach report
✓ Key frames + swing trajectory replay
✓ No charge if analysis fails
🔒 Secure payment via Stripe · Visa · Mastercard · Apple Pay · WeChat Pay · Alipay
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Your report will appear here.
Your swing analysis
Your swing, frame by frame
Can this swing help GolfTrace get more accurate?
If you agree, we keep this swing to improve our analysis models. Nothing is kept unless you choose to, and you can withdraw anytime.
What exactly is kept?
Skeleton data & numbers: the analysis summary, per-frame body keypoints, club-head positions and any launch-monitor numbers read from the screen — no video. Video: the above plus the video, with your face blurred and the audio silenced except half a second around impact; videos with other people in frame are not kept. Stored on our own server in Canada, used only to improve GolfTrace, never sold or shared, no face recognition, kept for up to 3 years. Withdrawing deletes it immediately; model versions already trained can't un-learn a single swing, but it won't be used again.
Coach's take
Read the full report
All the numbers
Something look wrong?
Removes the replay videos, key frames and text report from our server now (otherwise they are deleted automatically).
Local coaches who can help
Partner coachesAre you in the Greater Toronto Area? See Chinese-speaking coaches nearby who work on the issues in this report.
GolfTrace partners with these coaches. Recommendations are based on this report and each coach's specialties; contact details are provided by the coaches themselves, and GolfTrace never passes on your personal information.
Show raw metric data (JSON)
Your progress
Every swing you analyze is saved on this device only (not on our server). Film from the same spot each time — numbers from different camera positions aren't comparable.
Built on what coaches actually measure
Tempo ratio
Backswing-to-downswing timing, counted from takeaway to the top and from the top to impact. Pros in our sample have a median of about 1.6 : 1 — we measure yours to two decimals.
Club-head trajectory
The club head is tracked frame by frame and drawn as a slow-motion replay: backswing in blue, downswing in red.
Plain-language coaching
No jargon dump. You get 2-3 things you did well, 2-3 to fix, and what to practice next.
Simulator numbers
Filming in a simulator bay? We read ball speed, club speed, carry and spin straight off the screen and build them into your report. Keep recording about 5 seconds after impact so the screen has time to show that shot.
Private by design
Your video is used only to produce your report. Replay videos are deleted automatically within 24 hours, and we never share or sell them.
Pay per video. No subscription.
The sample is free and needs no sign-in.
- Sample swing
- Free
- One analysis of your own video
Each analysis includes a written coach report, four key frames, and swing-path and motion replays.
No charge if the analysis fails.
Analyzing your own video needs an account (Google or email).
Analyze my swingAre you a golf coach?
Every GolfTrace report tells a golfer what to fix first.
Contact usQuestions golfers ask
Is my video uploaded, and how long is it kept?
Yes — the video is uploaded to our server so it can be analyzed there. The original upload is deleted as soon as the analysis finishes, the replay videos and key frames we generate are deleted automatically within 24 hours, and the text report is kept for 30 days. Only the numeric metrics (angles, timings) are sent to Anthropic's Claude to write the coaching text; if your video shows a launch-monitor screen we can't read locally, a small crop of that screen may be sent to Claude to read the numbers.
How much does it cost?
The sample swing is free. Analyzing your own swing is a one-off payment per video — the price is shown on the analyze button. If the analysis fails, you are not charged.
Do I need an account?
Not for the free sample.
What kind of video works best?
Down-the-line (behind your hands, looking at the target) gives rotation and swing plane; face-on gives hip sway and impact. Use a tripod or a steady surface, keep your whole body and the club in frame, film in good light at 60 fps if your phone allows, and trim the clip to one swing (3–10 seconds). Hitting into a simulator? Keep about 5 seconds after impact — the screen only updates once the ball has landed.
Can it analyze putts or chips?
The prototype is tuned for full swings. Short-game motion uses a different scoring model and is on the roadmap.
What is X-factor?
The angle difference between your shoulder line and hip line at the top of the backswing. Bigger separation = more stored power. Amateurs average around 30°; tour pros 40–50°.
Why do some metrics show N/A?
Some measurements can only be trusted from certain camera angles. Rotation (X-Factor, shoulder and hip turn) needs a down-the-line view; hip sway needs a face-on view. When the angle is not right we show N/A instead of a wrong number.
Will my video be used to train models?
Only if you say so on the results page.