See your stroke like a tour coach does.
Upload a single clip and ProMirror builds a 3D model of your swing, compares it frame-by-frame against professional reference motion, and shows you exactly what to fix.
Free to start · No download · Works on any phone clip
Three steps to a better swing
Record a stroke
Film one clean swing side-on with any phone camera.
Extract the motion
Pose estimation runs right in your browser in seconds.
Compare & improve
Get a scored 3D breakdown vs. a pro and targeted fixes.
Everything happens in the browser
No servers crunching your video, no waiting in a queue. The heavy lifting runs locally and the science runs on every frame.
3D pose extraction
Your browser turns any phone clip into a 33-point 3D skeleton — no app, no upload wait, no special gear.
You vs. the pros
Side-by-side 3D playback aligns your stroke against tour-level reference motion so differences are obvious.
Joint-angle analysis
Elbow, shoulder, hip, knee and trunk rotation measured every frame — scale and position invariant.
Phase-aware scoring
Preparation, loading, contact and follow-through are detected and scored independently.
Time-warp alignment
Dynamic Time Warping matches strokes at different speeds, so fast and slow swings compare fairly.
Coaching feedback
Plain-language flags tell you exactly which joint, in which phase, is costing you points.
Ready to mirror the pros?
Create a free account and analyze your first stroke in under a minute.
Get started — it's free