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1
Photograph the end
Position yourself above the balls, phone facing down. A moving circle indicates your phone's tilt — center it within the target circle until the outline changes color. The photo is taken automatically after a short stabilization. You can also press the camera button manually.
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2
Automatic detection
The app automatically analyses the photo and detects the jack and balls in 1 to 2 seconds. If everything is detected, distances are displayed immediately. If detection is incomplete, two actions are available: adjust the detection sensitivity in the settings (⚙) — the photo is re-analysed in real time with each change. You can also add a ball manually by tapping on the image; the app then checks if a nearby detection exists and uses it automatically if so.
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3
Read distances
Balls are ranked from closest to farthest from the jack. The first one is the pointing ball.
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4
Place the jack manually
Tap directly on the jack in the photo. A yellow circle appears — drag it to adjust its position. Use the slider to adjust its size. The magnifier next to the yellow circle enlarges the photo six times to fine-tune its position and size.
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5
Correct balls
Tap an empty area to add a missing ball. Long press on a ball to remove it.
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6
Field tips
• Top-down view for more precision • Avoid shadows on the balls • Phone flat during capture • The jack must be fully visible