TranslateKit

TranslateKit is a Mac application designed specifically for developers who need to localize their iOS or macOS apps. It works by taking your app's String Catalog file (the .xcstrings format used in Xcode) and translating all its text content into over 125 languages. The process is straightforward: you open your project file in the app, select your target languages, and let the AI handle the translation. It's built to understand app context, so translations consider how phrases are used in your specific application, not just as isolated strings.

The tool uses AI models (including DeepL integration) to provide fast, context-aware translations, claiming to translate a 500-string app in about 50 seconds. It includes a built-in SDK with over 2,000 pre-translated common UI terms (like 'Cancel' or 'Save') to speed up the process further. A unique feature is its market potential data, which helps you prioritize languages based on their potential user base. The app handles quality assurance by protecting brand terms and offering optional AI proofreading to fix inconsistencies in formality, context, and grammar.

TranslateKit is ideal for indie developers and development teams looking to quickly expand their app's global reach without manual translation or complex API setups. Real-world use cases include localizing a finance app like MoneyCoach into Hindi and Urdu, or quickly adding support for European languages to a new productivity tool. It removes the friction of app localization, making it accessible even for solo developers with limited resources.