Why App Store Localization Matters#
Your app listing is your storefront. If it's only in English, you're invisible to 65% of smartphone users who search in their native language. App Store localization — also called ASO (App Store Optimization) localization — is one of the highest-ROI activities you can do as an app developer.
Key stats:
- Localized apps see 30-80% more downloads in target markets
- 70% of App Store searches are non-English
- Apple and Google boost localized apps in local search rankings
What to Localize#
iOS (App Store Connect)#
| Element | Character Limit | Impact |
|---|---|---|
| App Name | 30 chars | Very High |
| Subtitle | 30 chars | High |
| Keywords | 100 chars | Very High |
| Description | 4,000 chars | Medium |
| Promotional Text | 170 chars | Medium |
| What's New | 4,000 chars | Low |
| Screenshots | 10 per size | Very High |
Android (Google Play Console)#
| Element | Character Limit | Impact |
|---|---|---|
| App Title | 30 chars | Very High |
| Short Description | 80 chars | High |
| Full Description | 4,000 chars | High (indexed for search) |
| Screenshots | 8 per type | Very High |
| Feature Graphic | 1 | High |
Key difference: Google Play indexes the full description for search. Apple uses the separate keywords field. This changes your localization strategy.
Step-by-Step Localization Process#
Step 1: Research Target Markets#
Before translating, understand where your downloads are already coming from:
- Check your analytics — App Store Connect and Google Play Console show downloads by country
- Identify untapped markets — Countries with high smartphone penetration but low downloads for your app
- Research competitors — Which languages do competing apps support?
Top markets by app revenue (2026):
- United States (English)
- China (Simplified Chinese)
- Japan (Japanese)
- South Korea (Korean)
- United Kingdom (English)
- Germany (German)
- France (French)
- Brazil (Portuguese)
Step 2: Localize Your Keywords (iOS)#
Apple gives you 100 characters for keywords per locale. This is where localization has the biggest impact.
Don't just translate your English keywords. Instead:
- Research what users actually search for in each language
- Use local terminology (e.g., "Fitness" works in German, but "Übungen" (exercises) may have higher search volume)
- Avoid wasting characters on your app name (it's already indexed)
- Use commas, not spaces, to separate keywords
Example for a fitness app:
English: workout,exercise,fitness,gym,tracker,health,training,log
German: training,übungen,fitnessstudio,gesundheit,sport,tracker,tagebuch
Japanese: トレーニング,筋トレ,フィットネス,ジム,健康,運動,記録
Step 3: Optimize Your Title and Subtitle#
Your app name and subtitle are the most visible elements. They must:
- Be clear and descriptive
- Include high-value keywords
- Feel natural in the target language
- Stay within character limits (30 chars each)
Example:
| Language | Title | Subtitle |
|---|---|---|
| English | FitTrack - Workout Log | Track Workouts & Build Habits |
| German | FitTrack - Trainings-Log | Workouts tracken & Gewohnheiten aufbauen |
| Spanish | FitTrack - Registro Fitness | Registra Entrenamientos y Crea Hábitos |
Step 4: Translate Your Description#
For Google Play: The description is indexed for search, so include keywords naturally throughout.
For App Store: The description is NOT indexed, so focus on conversion — make it compelling.
Tips:
- Lead with benefits, not features
- Use local proof points (e.g., "Beliebt in Deutschland" for German users)
- Include a clear call to action
- Mention local payment methods if applicable
Step 5: Localize Screenshots#
Screenshots are the single most important conversion element. Users decide within seconds whether to download.
Best practices:
- Add localized text overlays — Don't just translate the app UI; add captions
- Show locale-relevant content — Use local names, currencies, date formats
- Adapt the design — Some markets prefer different visual styles
- Test different orders — The first 2-3 screenshots matter most
Step 6: Localize "What's New" Notes#
Keep your update notes localized. Users who see updates in their language are more likely to update promptly.
Common Mistakes to Avoid#
Mistake 1: Literal Translation of Keywords#
Don't translate keywords word-for-word. Research what users actually search for in each market.
Mistake 2: Ignoring Character Limits#
German text is ~30% longer than English. Your carefully optimized title might get truncated.
Mistake 3: Using the Same Screenshots#
A screenshot showing "$9.99" won't resonate with European users who expect "9,99 €".
Mistake 4: Forgetting RTL Languages#
Arabic and Hebrew require mirrored screenshot layouts and right-to-left text overlays.
Mistake 5: Not Updating Localized Listings#
When you update your English listing, update all localized versions too. Stale listings hurt trust.
Measuring Success#
Track these metrics after localization:
- Impression-to-download rate by country
- Keyword rankings in target languages
- Download growth in localized markets
- Revenue per market change
Tools for ASO Localization#
| Task | Tool |
|---|---|
| Keyword research | App Annie, Sensor Tower, AppTweak |
| Translation | shipglobal.dev (for metadata and strings) |
| Screenshot design | Figma, Canva with localized text |
| A/B testing | Google Play Experiments, StoreMaven |
| Analytics | App Store Connect, Google Play Console |
Automation with shipglobal.dev#
You can streamline the process:
- Export your App Store metadata to a JSON or text file
- Upload to shipglobal.dev
- Translate to all target languages in minutes
- Review localized keywords (important: refine for local search terms)
- Upload to App Store Connect / Google Play Console
Conclusion#
App Store localization is one of the highest-ROI activities for any app developer. The combination of translated metadata, localized keywords, and adapted screenshots can dramatically increase your visibility and downloads in international markets.
Start with your top 3-5 target markets, measure the results, and expand from there. Every day without localized listings is potential downloads lost.