I18n Studio

I18n Studio is a macOS tool for developers that uses GPT-4 to translate localization files with real product context. It supports common formats like JSON, XML, Localizable.strings, and String Catalogs, helping teams translate app UI text faster while keeping wording consistent.

Context-aware localization

Unlike basic translators, I18n Studio takes into account the information that usually lives next to strings and affects meaning:

• Comments and usage notes
• Scene descriptions (where and how text appears)
• Special markers like “Do not translate”
• Formatting rules such as Capitalize

Control and project-specific rules

The app lets you use your own API key, which helps you manage costs and keep control over privacy. You can also define translation rules for a specific project, describe style requirements, and generate consistent localizations across multiple languages.

Best fit

I18n Studio is useful for teams that update in-app text frequently and want to reduce manual translation and review work without losing quality and terminology consistency.