localization
appeeky/aso-skills
Expand your app to international markets with localized App Store listings and market-prioritized strategies.
What is localization?
Localization helps you adapt your App Store presence for new geographic markets by translating and culturally customizing metadata, keywords, and visuals. Use this when planning to enter new countries, expand revenue, or optimize for specific languages and regions.
- Assess current localization status and identify target markets based on size, competition, ARPU, and strategic fit
- Prioritize markets using a weighted framework (Tier 1 includes US, UK, Germany, Japan, France, South Korea, China, Brazil)
- Research local keywords per market—avoiding direct translation mistakes by understanding how locals actually search
- Localize metadata (title, subtitle, keywords, description, screenshots, preview video) with cultural adaptation
- Provide market-specific localization plans with keyword rankings, effort estimates, and expected impact
- Monitor keyword performance and conversion rates by country post-launch
How to install localization
npx skills add https://github.com/appeeky/aso-skills --skill localization- App ID for your app on the target App Store(s)
- Clarity on whether your app itself is localized (UI/content) or only the store listing needs localization
- Budget decision: professional translation, native-speaker review, or AI-assisted approach
How to use localization
- 1.Gather your app's current App Store listing and any existing localization context (check app-marketing-context.md if available)
- 2.Identify 3–5 target markets using the Tier 1 and Tier 2 market tables, evaluated on market size, competition, effort, ARPU, and strategic fit
- 3.Run keyword-research skill separately for each target market—do not translate English keywords directly
- 4.Create a localization plan per market with localized title, subtitle, keywords, and cultural adaptation notes
- 5.Translate and adapt metadata (description, screenshots, preview video) using native speakers with ASO knowledge, not just translators
- 6.Submit localized metadata to each App Store and monitor keyword rankings and conversion rates weekly post-launch
Use cases
- Expanding a productivity app from English-speaking markets into German, French, and Japanese to capture high-ARPU regions
- Localizing an e-commerce app's App Store listing for Brazil and Mexico, including currency symbols and local payment methods in screenshots
- Researching and adapting keywords for a fitness app in South Korea, where local search terms differ significantly from English equivalents
- Planning a phased rollout across Tier 2 markets (Spain, Italy, Netherlands) with effort and ROI estimates
- Updating screenshots and promotional text for seasonal campaigns in different regions (e.g., holiday promotions)
- App developers and publishers planning international expansion
- Product managers evaluating which new markets to enter
- ASO (App Store Optimization) specialists managing multi-market campaigns
- Growth teams optimizing revenue across geographic regions
localization FAQ
No—this is the biggest localization mistake. Keywords must be researched locally for each market. For example, 'budget tracker' becomes 'Haushaltsbuch' (household book) in German and '家計簿' (household ledger) in Japanese. Use the keyword-research skill for each target market separately.
Start with Tier 1 markets (US, UK, Germany, Japan, France, South Korea, China, Brazil, Canada, Australia) based on market size, competition, effort, ARPU, and strategic fit. Evaluate each using the weighted framework provided in the skill.
This skill focuses on App Store listing localization (metadata, keywords, screenshots). Confirm whether your app's UI and content are also localized, as that affects translation scope and effort.
Effort varies by market and language. The skill provides effort estimates (hours/days) per market. Metadata localization is faster; full description and screenshot adaptation takes longer. Budget for native-speaker review, not just machine translation.
Monitor keyword rankings weekly in each market, track conversion rates by country, and compare download trends before and after launch. Use this data to iterate on metadata and prioritize future markets.
Full instructions (SKILL.md)
Source of truth, from appeeky/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
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