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SCUBAzen carries a PADI hand signals reference chart. Open the menu on home, tap hand signals under app, then tap open full size to read the chart and pinch to zoom. The chart is built into the app, so it works without a connection.

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Open the chart

1

Open hand signals

Open the menu on home and, under app, tap hand signals.
2

Open it full size

The page shows the whole chart, labeled PADI reference chart, but it’s too small to read at page width. Tap open full size, or tap the chart itself.
3

Zoom in

Pinch to zoom in on the signal you want, and drag to move around the chart.
4

Close it

Tap the close mark (the X) to go back.

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Agree signals before you dive

The page opens with the app’s own reminder: “always review signals with your dive guide and buddy before commencing a dive”.