Auto Localize

Easily localize your projects with the help of GPT Models.

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Auto Localize is an editor for localization files (XLIFF,XCLOC,...) enabling automatic localization of projects developed in programming tools like XCode, Java, Android Studio, .NET, Unity, and Flutter. It is powered by OpenAI's most advanced GPT models. It's a free editor for manual localization, but the auto localization requires a subscription.

Auto Localize is a macOS editor that auto-translates localization files using GPT models.

for: Apple developers and mobile app teams needing multilingual app strings.
pricing: freemium · free trial

works withApp Store Connect

Key features

8 features of Auto Localize

Multi-format support — Scans and edits Xcode, Android, Flutter, Java, .NET, Unity and JSON localization files.
One-click AI translation — Translates missing strings into all languages with plurals, placeholders and glossary awareness.
Apple Intelligence on-device — Free, private translation runs locally or on Apple’s Private Cloud Compute.
App Store Connect integration — Localizes app store metadata and uploads screenshots directly from the app.
Translation memory — Reuses previously translated strings for free and never resends them.
Built-in review UI — Side-by-side language view with filters and “Needs Review” marking.
Glossary and tone control — Keeps brand terms consistent and applies a chosen tone to translations.
Backup and undo — Files are written in original order with backups, allowing safe undo.

Use cases

Localize an iOS app’s strings and App Store listing in minutes.
Translate Android and Flutter app resources using a single macOS tool.
Maintain consistent terminology across multiple languages with a custom glossary.
Export localized screenshots for each market and upload them to App Store Connect.

Auto Localize FAQ

Do I need an API key?+

No, Apple Intelligence works without a key on macOS 26+; OpenAI and Gemini require your own keys, LM Studio and Ollama run locally.

Are my strings sent to Auto Localize?+

Never. Strings are sent only to the AI provider you choose or stay on your machine; there is no Auto Localize server.

Will it change my files in strange ways?+

No. Files are written exactly as Xcode expects, preserving order, formatting and comments, with backups and undo support.

Which localization formats are supported?+

String Catalogs, XLIFF 1.2/2.0, .xcloc, .strings, .stringsdict, Interface Builder strings, Android XML, Flutter ARB, Java .properties, .NET .resx, JSON, and Unity via XLIFF.

What macOS version is required?+

macOS 14 Sonoma or later; Apple Intelligence needs macOS 26 or later on a supported Mac.

Summarized by DevHunt from autolocalize.app · Oct 15, 2026. Details may change; check the official site.