01
Upload the clip
Phone footage is enough. One angle, 5 to 90 seconds, any frame rate. No markers, no suits, no gym rig.
Motion intelligence, any sport
Your technique,
read frame by frame
Upload one clip from your phone. Game Feedback rebuilds the movement in three dimensions and tells you exactly where the rep broke down — and what to change next session.
33
Joints tracked
1,800
Frames analysed
48
Sports supported
4 min
Median turnaround
01
How a clip becomes a coach
02
Movement is reconstructed
33 joints tracked per frame, then converted into joint angles, velocities, ground contact and sequencing.
03
Feedback you can act on
Ranked corrections tied to timestamps, compared against your own history and the biomechanics of the sport.
02
Read on any sport
Football+6.4
Strike angle41.2°
Plant foot rotates late — power leaks through the hip.
Basketball+0.9
Release height2.41m
Elbow drifts outside the shot line on the second rep.
Tennis−13
Racket lag112ms
Kinetic chain fires shoulder-first. Lead with the hips.
Weightlifting−1.2
Bar path drift3.8cm
Bar swings forward at the second pull. Keep it over midfoot.
Sprinting−7
Ground contact94ms
Heel collapses on touchdown. Stiffen the ankle at contact.
Swimming+2.1
Catch angle38.5°
Elbow drops before the catch, spilling water past the forearm.
Boxing+4.8
Hip rotation27°
Cross lands with the rear foot flat. Pivot to add mass.
Golf+3.3
Hip–shoulder split46°
Upper body unwinds early — the X-factor closes before impact.
03
Watch a clip get read
Tracking · 33 jointslive
Bar path 3.8cm forward
One phone, one angle. The clip is decomposed into joints, velocities and contact events, then measured against the biomechanics of the lift and your own previous sessions.
- Peak bar velocity
- 1.72 m/s
- Hip extension
- 184°
- Turnover time
- 0.31s
- Symmetry
- 96%
04
What lands in your report
Not a score out of ten. A ranked list of what cost you the most, in the order worth fixing, each one anchored to the frame it happened on.
- Timestamped faults
- Every correction links to the exact frame, playable side by side with a clean reference rep.
- Sequencing map
- See the order your joints fired and how far it sits from an efficient kinetic chain.
- Session-over-session drift
- Track whether a correction actually held, or quietly returned three weeks later.
Report / jump-shot-04.movComplete
00:02.14
Elbow flare
Shot elbow 14° outside the vertical line
00:02.61
Release timing
Ball leaves hand 60ms after apex
00:03.05
Base width
Feet 8cm narrower than your best reps
00:03.48
Follow-through
Wrist snap consistent across all reps
1,842 frames · 33 joints · analysed in 3m 51s
Start with one clip