Measure a Custom Angle

Place and refine three points to measure any joint or alignment angle on a video frame.

Last updated · App version beta

The angle tool lets you measure any joint or alignment yourself by dropping three points on the frame. It is ideal for checking a specific angle the automatic analyzers do not cover.

Steps

1. Start a new angle

Start a New Angle from the analysis overlay.

2. Place the start point

Tap anywhere to place the blue start point.

3. Place the vertex

Tap again to place the red vertex point—this is the corner the angle is measured at.

4. Place the end point

Place the green end point to complete the angle. The measured value appears immediately.

5. Refine and style

Drag any colored handle to fine-tune the angle, then tap Done. Style options let you change line color and width, dashed lines, arc size, and the arc direction.

Tips

  • Place the vertex on the joint you are measuring (for example the knee) and the start and end points along each segment (thigh and shin).
  • After placing, drag a handle and release to keep the new angle.