ギターチューナープロ

Why this icon holds up

On 2026-08-14 the vault captured the ギターチューナープロ icon (Music, BR): 绿色渐变背景，上方有五颗黑色星星，中间是黑色的吉他琴头，右侧有一个黑色的音叉。

No earlier vault capture exists yet, so this dated page is the baseline for future diffs.

Tagged as photographic · fresh.

Small-size readability

• Contrast: black mark on green fill — check both dim OLED and bright LCD.
• Silhouette budget: stars, guitar headstock, tuning pegs, tuning fork, logo should remain readable after the store’s rounded-square crop.
• Lettering “D” must survive home-screen size; thin strokes usually fail first.
• detailed/illustration/photo detail collapses quickly below ~60px — verify the 60px mental model before trusting the master.
• Internal usability score for this capture: 0.4/100 (heuristic, not a store ranking).

These checks are practical references for designers reviewing ギターチューナープロ, not authoritative store scores.

Transferable design moves

• Keep stars as the primary silhouette before adding secondary ornaments.
• Concentrate the loudest chroma on the identifying shape (black), not the whole green field.
• This capture’s detailed/illustration/photo vocabulary transfers best when the same restraint is applied at export size.