String Catalog

Automates iOS and Android app localization — connects to your repo, translates strings, and creates pull requests.

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Quick facts
What is it Automates iOS and Android app localization — connects to your repo, translates strings, and creates pull requests.
Pricing Paid — from $15/mo
Free tier No
Platform Web Application
Best for localizing an iOS app for international markets, automating Android string translation updates
Domain registered 2024

Data updated Aug. 1, 2026

What does String Catalog do?

String Catalog is a specialized tool that automates the localization process for iOS and Android mobile applications. It connects directly to your code repository, scans for .xcstrings (iOS) or strings.xml (Android) files, and automatically translates the text into multiple languages. The core function is to eliminate the manual, time-consuming work of managing translations, which traditionally involves spreadsheets, emails, and manual copy-pasting. Once set up, it handles the entire workflow, creating a pull request with the newly translated strings ready for your team to review and merge.

What sets String Catalog apart is its deep integration with the native development platforms. It works directly with the file formats that Xcode and Android Studio expect, preserving crucial metadata like comments and device-specific variations. A key feature is its AI-powered checker that reviews each translation for common errors, ensuring placeholders are correct and the tone is appropriate. The system is designed for zero maintenance after the initial 15-minute setup, automatically creating new pull requests whenever the source text changes, which can save development teams up to 12 hours per release.

This tool is a significant time-saver for mobile development teams and indie developers who release their apps in multiple languages. It's particularly beneficial for teams that ship updates frequently, as it keeps translations perfectly in sync with code changes. Instead of developers getting bogged down in manual string management or maintaining fragile custom scripts, String Catalog handles the heavy lifting, allowing teams to focus on building new features. The real-world payoff is reclaiming hundreds of hours of development time each year while ensuring a smoother, more reliable localization process.

#android development#app localization#automation#developer tools#ios development#translation

Key features

What makes it stand out
01
Automated pull request generation for new translations in seconds
02
Direct integration with native iOS (.xcstrings) and Android (strings.xml) file formats
03
AI-powered translation checker for placeholders, tone, and accuracy
04
Supports up to 40 languages with custom glossary and tone notes
05
Built for teams with collaborative review and context-sharing features

Who is String Catalog for?

Who benefits most from this tool
localizing an iOS app for international markets
automating Android string translation updates
streamlining the app release process for multiple languages

Pricing

Hobby

$15.0/month
$15.0/month billed yearly
  • 3,000 base string keys
  • 20 localized release notes
  • Unlimited apps
  • Add up to 40 languages
  • Manage 3,000 base string keys
  • Unlimited updates and localizes new strings as your app evolves
  • 20 localized release notes per month
  • Github Integration with unlimited pull requests
  • Fully automated translations
  • 48-hour support response time
  • Localization accuracy monitoring
  • Team Support

Pro

$45.0/month
$45.0/month billed yearly
  • 7,500 base string keys
  • Unlimited apps
  • Add up to 40 languages
  • Manage 7,500 base string keys
  • Unlimited updates and localizes new strings as your app evolves
  • Unlimited localized release notes
  • Localization accuracy monitoring
  • Github Integration with unlimited pull requests
  • Fully automated translations
  • 24-hour support response time
  • Team support

Business

$75.0/month
$75.0/month billed yearly
  • 15,000 base string keys
  • Unlimited apps
  • Add up to 40 languages
  • Manage 15,000 base string keys
  • Unlimited updates and localizes new strings as your app evolves
  • Unlimited localized release notes
  • Localization accuracy monitoring
  • Github Integration with unlimited pull requests
  • Fully automated translations
  • 24-hour support response time
  • Team support

Trust & presence

Domain Domain registered 2024

Gallery

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