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Localization guide

Japanese (ja) App Store screenshot
localization & typography.

Japan is one of the highest-ARPU mobile markets in the world—and Japanese users immediately spot awkward mid-particle line wraps or untranslated English UI screenshots.

Locale spec50 App Store Connect locales
  • Store codesja (Japanese)
  • Script & directionLeft-to-Right horizontal UI · High character density
  • Expansion budget−15% to −30% character count vs English, fuller glyph height
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Localized Japanese App Store screenshot panel rendered in AppScreenDesign Studio
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Store locale codes
ja (Japanese)
Reading & script
Left-to-Right horizontal UI · High character density
Text expansion
−15% to −30% character count vs English, fuller glyph height
Key check
Bunsetsu phrase-boundary line breaks, localized yen/date UI captures, trust-focused benefit clarity

All 50 App Store Connect locales are built into every AppScreenDesign project with independent copy, raw captures and layout overrides.

Practical walkthrough

Localize ja sets for natural phrase rhythm.

Pair native Japanese UI screenshots with clean Kanji/Kana line breaks.

  1. Draft natural Japanese value hooks

    Adapt headlines around concrete outcomes rather than literal English syntax.

  2. Bind ja-JP simulator captures

    Show Yen (¥) pricing, Japanese dates and native UI labels inside every device frame.

  3. Tune phrase line breaks on canvas

    Inspect every panel at thumbnail scale so particles never orphan on a trailing line.

01

Prevent awkward phrase-splitting wraps

Adjust text box width or explicit line breaks on your ja locale so particles and compound Kanji terms stay grouped naturally.

02

Swap English UI captures for ja captures

Bind Japanese simulator screenshots to the ja locale slot so users see native menus, Yen (¥) formatting and local content.

03

Higher context converts in Japan

Japanese top-chart screenshots often pair a concise benefit headline with structured feature pills—use templates like Feature Pills or Finexa cleanly.

Why literal translation underperforms in ja

Direct word-for-word English slogans often sound unnatural in Japanese. Have your agent or translator draft natural Japanese store headlines tailored to the exact character grid of each panel.

Preview every panel before export

Use preview_panel over MCP or open the ja locale selector in Studio to inspect Kanji stroke clarity at store thumbnail size.

Questions

Before you start.

Can I start on the Free plan without a credit card?

Yes. Free ($0 forever) includes the full 3D browser studio, ready-made template library, Remote MCP access to test AI agents, and unlimited draft projects with watermarked preview exports.

Are AI-generated layouts flattened into static images?

Never. Every scene stays an editable multi-layer SceneDoc with live text, 3D hardware poses, backgrounds, vector badges and per-locale overrides.

Does AppScreenDesign charge markup on AI tokens?

No ($0 AI markup). Connect Claude, ChatGPT, Cursor or Codex via https://appscreendesign.com/mcp using the AI subscription you already have.

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