Drag to rotate · scroll to zoom · Z zooms into a face · click a square, type 1–9 · Shift+digit or N for notes · ⌘Z undo
Drag to rotate · tap a face to zoom in
Swipe to turn the cube · tap a square
Click a square, type 1–9 · arrows move · Shift+digit or N for notes · ⌘Z undo · Backspace clears
Tap a square, then a number