Safari extension localizations follow store and device language
Localize the listing with Apple’s display rules in mind, because the language a buyer sees can shift with store location, device settings, added locales, and the primary language you picked in App Store Connect.
Why this can grow a startup
Localization gets treated like a one-column spreadsheet problem when it is really a retrieval and trust problem. Apple’s localization reference spells out why: the language shown to each customer can be shaped by the App Store language for their location, their device language settings, the locales you added, and the primary language configured in App Store Connect. That means Safari extension teams should not assume one translated page cleanly maps to one audience. The practical move is to localize the markets that already matter, then inspect the visible combinations so the first-time buyer sees a page that feels intentional instead of half-translated.
Company example
Apple says the metadata language shown to each customer may depend on the App Store language for their location, device language settings, languages added, and the primary language in App Store Connect.
Source and metric
Source: App Store Connect Help: App Store localizations
Apple lists four display inputs for localized metadata: store language by location, device language, added locales, and primary language.
When to use it
Use this when SEO, Marketplaces, International is relevant to browser extensions, safari extensions, localization and you can run a bounded test with a low budget.
When not to use it
Do not use it as a substitute for customer evidence, a clear owner, or a measurable stop condition. Local platform rules and market behavior still need checking.
Founder checklist
- Read App Store Connect Help: App Store localizations and identify what is directly supported.
- Choose one channel context: SEO, Marketplaces, International.
- Define the test around Apple lists four display inputs for localized metadata: store language by location, device language, added locales, and primary language..
- Set an owner, evidence window, and stop condition before launch.
Explore the context
Apply this with an operator
Choose the first market, local proof, partners, and distribution sequence with operator context.