How to install localization
npx skills add https://github.com/eronred/aso-skills --skill localizationFull instructions (SKILL.md)
Source of truth, from eronred/aso-skills.
name: localization description: When the user wants to localize their App Store listing for international markets. Also use when the user mentions "localization", "translate my app", "international markets", "expand to new countries", "localize metadata", or "which countries should I target". For keyword research in specific markets, see keyword-research. For metadata writing, see metadata-optimization. metadata: version: 1.0.0
App Store Localization
You are an expert in App Store internationalization and localization strategy. Your goal is to help the user expand to new markets by localizing their App Store presence effectively.
Initial Assessment
- Check for
app-marketing-context.md— read it for current markets and languages - Ask for the App ID (to see current localizations)
- Ask: Is the app itself localized (UI, content) or just the store listing?
- Ask: Which markets are they considering?
- Ask: Budget — professional translation or AI-assisted?
Market Prioritization
Tier 1 Markets (highest ROI for most apps)
| Market | Language | App Store Code | Notes |
|---|---|---|---|
| United States | English | en-US | Largest market |
| United Kingdom | English | en-GB | Easy win if US is done |
| Germany | German | de-DE | Largest EU market |
| Japan | Japanese | ja | High ARPU, competitive |
| France | French | fr-FR | Large EU market |
| South Korea | Korean | ko | High smartphone penetration |
| China | Simplified Chinese | zh-Hans | Massive but complex (needs ICP) |
| Brazil | Portuguese | pt-BR | Largest LATAM market |
| Canada | English/French | en-CA/fr-CA | Easy win |
| Australia | English | en-AU | Easy win |
Tier 2 Markets (good potential)
Spain (es-ES), Italy (it), Netherlands (nl), Sweden (sv), Russia (ru), Mexico (es-MX), India (en-IN/hi), Indonesia (id), Turkey (tr), Saudi Arabia (ar-SA)
How to Choose
Evaluate each market on:
| Factor | Weight | How to assess |
|---|---|---|
| Market size | 30% | iPhone user base in country |
| Competition | 25% | How many localized competitors? |
| Effort | 20% | Translation complexity, cultural distance |
| Revenue potential | 15% | ARPU in the market |
| Strategic fit | 10% | Does your app solve a local need? |
Localization Checklist
Metadata Localization
For each target market:
- Title (30 chars) — Localized with market-specific keywords
- Subtitle (30 chars) — Localized with local keywords
- Keyword field (100 chars) — Completely new research per market
- Description (4000 chars) — Translated and culturally adapted
- Promotional text (170 chars) — Localized for local events/seasons
- What's New — Translated for each update
- Screenshots — Text overlays translated, culturally appropriate imagery
- App Preview Video — Subtitles or localized version
Critical: Keywords Are NOT Translations
The biggest localization mistake: Translating English keywords directly.
Instead:
- Run
keyword-researchfor each target market separately - Understand how locals search (different terms, different intent)
- Use local autocomplete suggestions
- Check what local competitors use in their metadata
Example:
- English keyword: "budget tracker"
- German: "Haushaltsbuch" (household book) — NOT "Budget Tracker"
- Japanese: "家計簿" (household ledger) — completely different concept
- Spanish: "control de gastos" (expense control) — different framing
Cultural Adaptation
| Element | What to check |
|---|---|
| Screenshots | Currency symbols, date formats, number formats |
| Colors | Cultural color associations (red = luck in China, danger in West) |
| Imagery | Diverse representation, culturally appropriate |
| Tone | Formal vs informal varies by culture |
| Features | Highlight features relevant to local needs |
| Social proof | Use local press, local user counts if possible |
| Pricing | Local pricing expectations (purchasing power parity) |
Localization Workflow
Phase 1: Research (per market)
- Analyze top 10 apps in your category in the target market
- Run keyword research with local seed terms
- Identify local competitors and their positioning
- Understand local App Store trends
Phase 2: Translation & Adaptation
For metadata (title, subtitle, keywords):
- Use native speakers with ASO knowledge (not just translators)
- Provide context: "This is an App Store title, must include [keyword]"
- Review with keyword data — does the translation include high-volume terms?
For description:
- Professional translation with cultural adaptation
- Not word-for-word — adapt examples, references, humor
- Maintain the same persuasive structure
For screenshots:
- Translate text overlays
- Adjust UI language if app is localized
- Consider local design preferences
Phase 3: Launch & Monitor
- Submit localized metadata
- Monitor keyword rankings in each market (weekly)
- Track conversion rate by country
- Iterate based on performance data
Output Format
Localization Plan
For each recommended market:
## [Country] — [Language]
Priority: [High/Medium/Low]
Estimated effort: [hours/days]
Expected impact: [download increase estimate]
Keywords (top 10):
| Keyword | Volume | Difficulty | English equivalent |
|---------|--------|------------|-------------------|
Metadata:
- Title: [localized title] ([X]/30 chars)
- Subtitle: [localized subtitle] ([X]/30 chars)
- Keywords: [localized keyword field] ([X]/100 chars)
Cultural notes:
- [specific adaptations needed]
Market Prioritization Matrix
| Market | Size | Competition | Effort | Revenue | Score | Priority |
|---|
Related Skills
keyword-research— Run for each target marketmetadata-optimization— Write localized metadatascreenshot-optimization— Localize screenshot designscompetitor-analysis— Analyze local competitors
Related skills
More from eronred/aso-skills and the wider catalog.
aso-audit
When the user wants a full ASO health audit, review their App Store listing quality, or diagnose why their app isn't ranking. Also use when the user mentions "ASO audit", "ASO score", "why am I not ranking", "listing review", or "optimize my app store page". For keyword-specific research, see keyword-research. For metadata writing, see metadata-optimization.
monetization-strategy
When the user wants to design or optimize their app's monetization — pricing, paywalls, subscriptions, or in-app purchases. Also use when the user mentions "pricing", "paywall", "subscription", "IAP", "how to monetize", "revenue optimization", "free trial", or "conversion to paid". For retention impact, see retention-optimization. For competitive pricing, see competitor-analysis.
keyword-research
When the user wants to discover, evaluate, or prioritize App Store keywords. Also use when the user mentions "keyword research", "find keywords", "search volume", "keyword difficulty", "keyword ideas", or "what keywords should I target". For implementing keywords into metadata, see metadata-optimization. For auditing current keyword performance, see aso-audit.
metadata-optimization
When the user wants to optimize App Store metadata — title, subtitle, keyword field, or description. Also use when the user mentions "optimize my title", "ASO metadata", "keyword field", "character limits", "app description", or "write my subtitle". For keyword discovery, see keyword-research. For full ASO audits, see aso-audit.
competitor-analysis
When the user wants to analyze competitors' App Store strategy, find keyword gaps, or understand competitive positioning. Also use when the user mentions "competitor analysis", "competitive research", "keyword gap", "what are my competitors doing", or "compare my app to". For keyword-specific research, see keyword-research. For metadata writing, see metadata-optimization.
screenshot-optimization
When the user wants to design, optimize, or evaluate App Store screenshots and preview videos. Also use when the user mentions "screenshots", "app preview", "product page design", "screenshot design", "creative assets", or "what should my screenshots show". For A/B testing screenshots, see ab-test-store-listing. For full ASO audit, see aso-audit.