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  • Analyze, review, and edit your app translations with Loca Studio

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Need a sample set of translation files to
evaluate the app? Download samples
  • Automatic QA checks
  • Powerful search and filter
  • Merge and diff translations
  • Integrates into your existing workflow


  • Work on a whole folder of Xcode Localization Catalog or XLIFF files. No internet access required.
  • Take your translations to the next level

Automatic QA checks detect common mistakes

  • Static analysis of format string placeholders. Checks that source and target types match. Supports IEEE printf formats and Apple's extensions, including stringsdict plurals.

  • Whitespace mismatches

  • Terminology Check. Automatically highlights terms from the glossary and flags potential issues. Includes a multilingual glossary — the most commonly used iOS 13 terms in 39 languages.

  • Language mixups. Find translations that may be in the wrong language. For example, a target translation in English where Spanish is expected.

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Merge Updates from a copy of the translation files

See a character-level diff of what changed in each translation unit. Quickly apply a filter to view the translations that were updated and have a detected QA issue.


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Extract translations from an Excel spreadsheet

  • Loca Extract, an included app, helps you extract translations from a spreadsheet.

  • Drag and drop to merge the extracted translations into an open document in Loca Studio.

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Unlock Loca Studio


  • Basic

    Free
    • Basic features:
      All non-pro features, including unlimited editing, Loca Term, and Loca Extract
    • All Pro features:
      Automatic QA Checks (Formatting and Whitespace, Terminology, Language), Merge Updates, and any future Pro feature we add
    • Support by email
  • Pro

    $44.99* /ONE-TIME IN-APP PAYMENT
    • Basic features:
      All non-pro features, including unlimited editing, Loca Term, and Loca Extract
    • All Pro features:
      Automatic QA Checks (Formatting and Whitespace, Terminology, Language), Merge Updates, and any future Pro feature we add
    • Priority support by email for one year
  • Pro for Teams

    from $1.99* /MONTH
    • Change team members at any time
    • Basic features:
      All non-pro features, including unlimited editing, Loca Term, and Loca Extract
    • All Pro features:
      Automatic QA Checks (Formatting and Whitespace, Terminology, Language), Merge Updates, and any future Pro feature we add
    • Priority support by email
    ONE MONTH FREE TRIAL

* United States, USD. There are regional variations. Final price may vary - you can see it in the in-app store.

What else can you do with Loca Studio (for free)

  • Auto-preview format strings with arguments

  • Show invisible whitespace

  • Browse the iOS glossary in Loca Term

  • Auto-preview stringsdict plural forms

  • Filter on untranslated entries

  • Spellcheck with the macOS spell checker

  • Automatic grouping of stringsdict entries

  • View xcloc associated screenshots

  • Copy-paste entries to a spreadsheet (Numbers, Excel, Sheets)

Loca Studio is available for macOS Mojave and macOS Catalina

There are no ads and no analytics data collection. The app is sandboxed and respects your privacy. An in-app purchase unlocks the Pro features. There is a free trial of Pro.

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