Every pitch,
measured.
Chekket builds computer vision that turns a phone video into biomechanical data. No sensors, no wearables, no lab fees. Our flagship, FastpitchAI, brings that analysis to every softball pitcher, instructor, and coach with a smartphone.
From video to verdict
On-Device Pose Detection
A bioskeleton is tracked directly on your phone using on-device pose estimation. No sensors, no wearables. Record or upload a bullpen video and the skeleton is overlaid on the athlete automatically.
Pitch Phase Detection
Every windmill delivery is segmented into six phases automatically, grounded in published biomechanics research. If detection is off, drag the phase markers to correct it inline. Handedness is detected automatically too.
Biomechanics Engine
Six metric families are computed per frame and keyed to the detected phase: elbow flexion, shoulder elevation, knee flexion, trunk position, stride percentage, and windmill speed. Every metric ships with an expected target range, so the number means something.
Coaching Layer
Frame-by-frame scrubbing, slow motion, telestration drawing, and recorded voiceover analysis sessions. Export the analyzed video with the skeleton and drawings burned in, and track trends over time in the biometric dashboard.
Metrics for every angle
FastpitchAI recognizes whether you filmed from the side, front, or back automatically, then benchmarks whichever metrics that angle can actually see. No manual setup.
The six core metrics, benchmarked and phase-aware on every analyzed pitch, whether you're looking at the live dashboard or a video you export.
Windmill Speed
°/sMaximal arm speed through the circle. It's an output of good sequencing, not a number we chase directly.
Elbow Flexion
°Benchmarked at every phase of the delivery. Efficient flexion transfers energy instead of leaking it, and protects the arm.
Shoulder Elevation
°Benchmarked at the top of the backswing, where the arm's position sets up everything that follows.
Trunk Position
°Forward lean through the load, lateral lean at release: staying balanced keeps the release point repeatable.
Knee Flexion
°Scored on the drive leg before foot contact, then the stride leg after: your base for the whole delivery.
Stride Percentage
%Stride length as a percentage of body height at foot contact, benchmarked against published research.
Own the circle.
FastpitchAI is free during alpha while we build it with the community. Level up together.