How to prepare an iOS app for international localisation

1. Adopting String Catalogs natively

Ditch legacy .strings files. String Catalogs (.xcstrings) integrated into Xcode provide a unified dashboard to audit your translation coverage, ensuring zero missing labels.

2. Designing Adaptable UI Layouts

Words vary in length across languages (e.g., German requires about 30% more space than English). Avoid hardcoding widths in SwiftUI components. Use dynamic layouts so containers grow naturally without clipping text.

3. Localising App Store Metadata

Translating internal strings is just half the battle. You must localize titles, subtitles, keywords, and screenshots in App Store Connect, as well as providing matching support and privacy URLs.