How FormStride works
Honest analysis, not magic. Here's exactly what happens between uploading a video and getting your coaching tips.
1. Record a side-view clip
5–15 seconds, full body in frame, daylight or bright indoor lighting. A treadmill or flat path works best.
2. Local pose detection
Your browser runs TensorFlow.js with MoveNet to track 17 body keypoints in every frame. The video never leaves your device.
3. Metrics + AI coaching
We compute cadence, foot strike, posture, knee drive, and more — then ask an AI coach to surface your top three fixes and one strength.
Privacy by default
Pose detection runs entirely in your browser. We only save the computed numbers and one still-frame thumbnail to your account. Your raw video stays in memory and is discarded when you leave the page.
A note on coaching
"Perfect form" depends on pace, distance, body type, and goals. FormStride gives you healthy ranges and friendly guidance — not a diagnosis. Stop running and consult a professional if you experience pain or injury.