| Test | A, app icon | B, ring with the 1 | C, ring, 1 and hubs |
| Reduction: does it read at 16 px? | Partly. A pale dotted hexagon with a bright centre. The ring is gone, the shape is still its own. Meaning is lost. | Yes, just. A circle with a 1 in it, soft. Clearest on the stone tile, weaker on green where the white 1 is thin. | Not better than B. The hubs turn the ring into a dotted line and crowd the 1. |
| Mono: one colour | Works. Every part is a plain shape. Ring is hair-thin at 60 px and below. | Works. The 1 never touches the ring, so one colour keeps it clean. | Works at 64 px. At 16 px the hubs and ring merge into one rough edge. |
| Reversed: light on dark | Works, it is already white on green. The thin ring is the weak part. | Works on the tile. As a bare mark on night the ring needs the lighter night green, as the site does. | Same as B, plus the hubs read as beads on the light ring. |
| Drawn from memory: in sand with a toe? | A ring, six dots, one in the middle. Easy, but the dot count and spacing would drift. Not verified, nobody drew it. | A circle and a 1. The easiest of the three. Not verified, nobody drew it. | A circle and a 1 are easy. The six dots are the part people drop or miscount. Not verified, nobody drew it. |
| Derivation: which brand idea? | Six hubs around the Twin. | Your sources become one: the switch closes into the ring, the ring carries the 1. | Both ideas in one shape: six hubs, and one. The dots say six while the 1 says one. |