Flapp
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Running, from a single photo

One still frame. Fewer metrics than a clip -- no cadence, no contact time -- and the report says which ones are missing rather than estimating them.

Annotated keyframe — Running, from a single photo
93/100Excellent

Measured against published ranges

Every target names where it comes from. A value a degree or two outside a band is inside the method’s own error, not a finding.

MeasurementYoursReferenceSource
Knee Angle79°80–175°
Elbow Angle125.2°70–135°
Ankle Angle122.3°65–115°
Trunk Lean2.1°-2–10°

Findings

  • Ankle Angle — 122.3°, against a reference of 65–115°

Just outside, and inside the method’s own error rather than a finding: Knee Angle — 79° against 80–175°.

Measured but not scored, because the frame cannot answer it: Hip Angle — 166.9°. Thigh is under the body, where the hip reads ~180° whatever you do. Use a frame at footstrike or at toe-off for a hip verdict.

Measured from a single side-on camera with 2D pose estimation. Only the near side of the body is measured; the far side is absent rather than assumed symmetrical. Reference ranges are efficiency targets from the literature, not diagnoses.

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Side-on, phone upright, you filling the frame. Free account, no card.

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