App Store Connect Localizations: Every Supported Language (2026)
App Store Connect supports far more languages than most developers realize — and each one can have its own screenshot set. Here is a complete reference and how to use it.
App Store Connect lets you add a separate localization for every language Apple supports — with its own title, subtitle, description, keywords, and screenshot set. Most developers add one English localization and call it done. That is leaving a large portion of available installs untouched.
This guide covers every language App Store Connect supports, how storefronts and localizations relate, which languages matter most for revenue, and how to add them to your listing.
Storefronts vs. localizations: understanding the difference
A storefront is a country-specific App Store. The German App Store, the Japanese App Store, and the US App Store are three separate storefronts. A localization is the language-specific content you upload: title, description, keywords, and screenshots.
The key insight is that multiple storefronts share a localization. The German (DE), Austrian (AT), and Swiss (CH) storefronts all display the German localization you provide. One set of German screenshots serves all three countries automatically.
Localizations are additive, not one-to-one
You do not need one localization per country. You need one localization per language. German covers Germany, Austria, and Switzerland. French covers France, Belgium, Canada, and other Francophone storefronts.
Every language App Store Connect supports
As of 2026, App Store Connect supports more than 40 language localizations. The most widely used are:
High-revenue languages
- English (US) — the default; required for all apps.
- Japanese (ja) — top-three global App Store revenue. Localization details.
- Simplified Chinese (zh-Hans) — the second-largest iOS market by volume. Localization details.
- Korean (ko) — exceptionally high revenue per user. Localization details.
- German (de) — the largest European market. Localization details.
- French (fr) — strong across France, Canada, and Francophone Africa. Localization details.
- Spanish (es) — covers Spain and is the base for Latin American storefronts. Localization details.
- Portuguese (pt) — serves Brazil (App Store's largest LatAm market) and Portugal. Localization details.
- Italian (it) — Localization details.
- Arabic (ar) — right-to-left; requires RTL layout adaptation. Localization details.
Additional supported languages
App Store Connect also supports: Danish, Dutch, English (Australia), English (UK), Finnish, Greek, Hebrew, Hindi, Hungarian, Indonesian, Malay, Norwegian, Polish, Romanian, Russian, Slovak, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese, and more.
Boom Screens is expanding to all App Store Connect languages
We started with the top 10 highest-revenue languages and are expanding localization support to cover every language available in App Store Connect — including Arabic, Hindi, Thai, Turkish, Polish, and all the rest. If your key market speaks a language not yet in our list, it is coming.
Which languages drive the most revenue
Not all localizations are equally valuable. Prioritize by the revenue potential of the markets using each language:
- 1Japanese — highest average revenue per user globally; users spend heavily on apps and in-app purchases.
- 2English (US) — largest single storefront by revenue; your baseline.
- 3Simplified Chinese — enormous volume; tight competition but massive opportunity.
- 4Korean — small population, exceptionally high monetization rate.
- 5German — anchor of Western European App Store revenue.
After the top five, French, Spanish, and Portuguese (Brazil) offer the best return on localization investment for most consumer apps.
How to add a localization in App Store Connect
- 1Open App Store Connect → My Apps and select your app.
- 2Under the App Store tab, open the version you are editing.
- 3Find the localizations section at the top of the version page.
- 4Click the + button and select the language you want to add.
- 5Fill in the localized title, subtitle, promotional text, description, and keywords for that language.
- 6Upload localized screenshots for each device size under the same language.
- 7Save and include in your next submission.
Per-language screenshots: the most underused feature
Every localization can have its own screenshot set. Most developers upload one English set and leave it unchanged for every language. This means Japanese users see English screenshots, German users see English screenshots — and conversion suffers accordingly.
Studies of App Store conversion consistently show that localized screenshots outperform English-only screenshots in virtually every non-English market. The lift is often in the range of 20-60% depending on the market and how language-sensitive it is.
With Boom Screens, you design your screenshots once and the tool generates localized versions for all App Store Connect languages automatically — preserving your layout, handling RTL mirroring for Arabic and Hebrew, and rendering CJK fonts correctly for Japanese, Korean, and Chinese.
Every language, one design
Boom Screens localizes your screenshots into all App Store Connect languages. No manual resizing, no manual translation, no broken layouts. Try it free.