iOS Localization & Internationalization Localize iOS 26+ apps using String Catalogs, modern string types, FormatStyle, and RTL-aware layout. Localization mistakes cause App Store rejections in non-English markets, mistranslated UI, and broken layouts. Ship with correct localization from the start. Contents - String Catalogs (.xcstrings) - String Catalogs (Xcode 15+) and Generated Symbols (Xcode 26+) - String Types -- Decision Guide - String Interpolation in Localized Strings - Pluralization - FormatStyle -- Locale-Aware Formatting - Right-to-Left (RTL) Layout - Common Mistakes - Localization…