Best list of languages for your AppStore apps to localize screenshots into
If you’re launching on the App Store or Google Play, translating into these languages gives you the biggest bang for your buck. Here’s why:
| Language | Why it matters |
|---|---|
| 🇬🇧 English | Baseline for ASO. 28% of all app revenue comes from US alone. Plus UK, Canada, Australia. Required for App Store review. |
| 🇪🇸 Spanish | 500M+ speakers. #2 most used language on iOS. Dominates LATAM + Spain + huge US Hispanic market. High download volume. |
| 🇩🇪 German | Germany is Europe’s largest app economy. German users have high LTV and expect native-language UX. Low tolerance for English-only apps. |
| 🇫🇷 French | France + Canada + parts of Africa. 300M+ speakers. French law actually requires consumer apps to localize. |
| 🇮🇹 Italian | Italy ranks top 10 for iOS spend. Italians are mobile-first and prefer apps in Italian for trust + conversion. |
| 🇯🇵 Japanese | Japan = #3 country for App Store revenue despite smaller population. Users pay, but demand perfect Japanese. Poor translations get 1-starred. |
| 🇰🇷 Korean | Korea has 95% smartphone penetration and highest ARPU globally. Google Play rules here, and Korean listings rank way better. |
| 🇳🇱 Dutch | Netherlands has high iOS market share + high spend per user. Dutch users rate apps lower if only available in English. |
| 🇵🇱 Polish | Poland is Central Europe’s biggest mobile market. Fast growth, low CPI, and users strongly prefer Polish apps. |
| 🇵🇹 Portuguese | Brazil = #2 country for downloads worldwide. 215M+ people. PT-BR localization can 3x your conversion rate vs English. |
| 🇷🇴 Romanian | Romania has one of EU’s fastest growing app markets. Tech-savvy users, but English proficiency is lower than Western EU. |
| 🇷🇺 Russian | 250M+ speakers across RU + CIS. Huge Android base. Localized apps see 6x more downloads than English-only. |
| 🇹🇭 Thai | Thailand is #2 in SEA for mobile spend. Thai users rarely download apps without Thai screenshots/descriptions. |
| 🇹🇷 Turkish | Turkey = top 15 for downloads globally. Young, mobile-first population. Local payment methods + language = higher IAP. |
| 🇺🇦 Ukrainian | Rapidly growing tech market. Strong preference for Ukrainian over Russian post-2022. Shows cultural respect = brand loyalty. |
| 🇻🇳 Vietnamese | Vietnam has 77M+ smartphone users and is the fastest growing app market in SEA. Localizing = major competitive edge. |
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