Biomechanics instrument · v1 self-assessment
Objective throwing mechanics for athletes who never had a coach.
Fourteen literature-grounded mechanics checks and a twelve-week program built around what you flag. Three minutes, no signup, and we never ask who you are.
Rate your throw →
No account. No email. Answers are kept anonymously.
Poster frame — skeleton landmark overlay on a real throw. Muted loop when the asset lands; this still is the fallback.
Elite throwers get motion capture in a lab.
Everyone else gets “you're flying open.”
MaiCoach is the instrument in between.
How it works
01
Rate yourself
14 mechanics checks, about three minutes. Every question has a real “I'm not sure”.
02
Get your program
A 12-week plan built around what you flagged, drawn from an 18-drill library. Printable.
03
Coming soon
Upload video
Real measurement from two camera angles: 3D skeleton, 14 verdicts, and the frame each verdict came from.
14skill tests, literature-grounded
4.1Mlandmark observations processed
1.85 pxstereo calibration RMS, consumer rig
0.995mAP50, in-house ball detector
12peer-reviewed sources