MetafrasisPLus is your fast, developer-first localization studio for macOS.

** Localize fast using AI in 42 languages hundreds of string in seconds! No Credits required. 

** Use Apple On-Device or LM Studio for extra privacy. OpenAI and DeepL APIs are also available.

** Fall back API mechanism uses a second provider in case of error, so you never stop localizing!

** Session temp storage ensures that you will never lose your translations by accident!

** Stop wrestling with scattered localization files and repetitive translation steps. Import your .xcloc bundles, translate at scale, review with confidence, and export cleanly back to Xcode, all in one native workspace.

Whether you’re shipping your first multilingual app or maintaining a large product, MetafrasisPLus helps you move faster with fewer mistakes.

What you can do:

• Import one or many .xcloc bundles from Xcode

• Translate with Apple On-Device, DeepL, OpenAI, or LM Studio

• Batch-translate missing strings in seconds

• Re-translate selected rows when you need better wording

• Review and edit translations in a powerful table editor

• Track every row with clear states (new, queued, translated, reviewed, error)

• Filter, search, and sort by key, file, language, and status

• Keep placeholders and technical tokens safe

• Export valid localization output ready for Xcode re-import

Built for real developer workflows:

• Native Liquid Glass macOS UX with sidebar, editor table, and inspector patterns

• Practical controls for provider setup, prompt behaviour, and throughput

• Local cache/session tools for cleaner iteration

• Keychain-based API key storage on your Mac

Why developers use MetafrasisPLus:

• Less manual copy/paste

• Faster localization cycles

• Better consistency across languages

• Clear visibility into what’s done and what still needs review

Privacy and control:

• You choose which provider to use

• API keys stay local in macOS Keychain

• You control what text is sent to external services

MetafrasisPLus includes Pro features for advanced automation and extra high-volume localization workflows.

* More features soon! Support the development!

MetafrasisPLus Support

Need help? We’re here to assist.

Please include your app version, macOS version, and a short description of the issue.

Common Help Topics

• Importing .xcloc bundles

• Translation provider setup (Apple On-Device / DeepL / OpenAI / LM Studio)

• Batch translation and row states

• Exporting localizations back to Xcode

• Pro features and purchase restore

Troubleshooting Checklist

• Confirm your provider/API settings in app Settings

• Check network access if using external APIs

• Verify your localization files are valid Xcode exports

• Try clearing local cache from Settings if needed

Bug Reports

When reporting a bug, please share:

• Steps to reproduce

• Expected behavior vs actual behavior

• Screenshots or error messages (if available)

Contact

Use the form in this website to contact us.

Privacy Policy

Last updated: April 19, 2026

MetafrasisPLus is a macOS localization tool. We are committed to protecting your privacy.

1. Data We Process

The app may process localization content from files you open (such as .xcloc bundles), translation text, and provider configuration data required for app functionality.

2. API Keys

When you enter API keys (for example, DeepL or OpenAI), keys are stored locally in your macOS Keychain. We do not intentionally store your API keys in plaintext files.

3. Third-Party Translation Providers

If you choose API-based translation, selected text may be sent to third-party services (such as DeepL, OpenAI, or LM Studio endpoints) according to your settings. Their privacy policies apply to that data processing.

4. Local Storage

The app may store local workspace/session cache and translation memory data on your Mac to support your workflow. You can clear local cache from app settings.

5. Analytics and Tracking

MetafrasisPLus does not use advertising trackers. If analytics are added in future versions, this policy will be updated.

6. Data Sharing

We do not sell your personal data. Data is shared only with providers you explicitly configure and use.

7. Children’s Privacy

The app is intended for developers and productivity use, not for children.

8. Contact

If you have privacy questions, contact us using the form in the Home page.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/