CoinSnap: コイン鑑定アプリ

Why this icon holds up

On 2026-08-11 the vault captured the CoinSnap: コイン鑑定アプリ icon (Reference, US): 黑色背景，中间有一个金色的圆形硬币，硬币上刻有字母C，四角有黄色的弧形括号。

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

Tagged as illustration · neutral.

Small-size readability

• Contrast: yellow mark on black fill — check both dim OLED and bright LCD.
• Silhouette budget: coin, letter C, brackets should remain readable after the store’s rounded-square crop.
• Lettering “C” must survive home-screen size; thin strokes usually fail first.
• illustration/dark detail collapses quickly below ~60px — verify the 60px mental model before trusting the master.
• Internal usability score for this capture: 0.6/100 (heuristic, not a store ranking).

These checks are practical references for designers reviewing CoinSnap: コイン鑑定アプリ, not authoritative store scores.

Transferable design moves

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