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How to Launch an iOS Simulator or macOS App in a Specific Language

Last Updated: October 18, 2026

Category: Development TipsTags: Xcode, Swift, SwiftUI, Localization, iOS Simulator, macOS When developing multilingual apps, testing different languages can quickly become time-consuming. Fortunately, both iOS Simulator and macOS support launching an application directly in a specific language — without changing the system language. This is particularly useful for testing translations, checking layouts, and creating localized App Store screenshots….