AppUFO

AppUFO is a macOS application that helps iOS developers quickly localize their apps by translating Xcode .xcstrings string catalogs into 36+ languages using AI. It solves the problem of expensive and slow manual localization, preserving placeholders, character limits, and brand names so translations fit the UI without breaking it.

What Makes AppUFO Stand Out

• AI-powered translations: Translate entire .xcstrings files with context-aware AI that understands your app's terminology and keeps placeholders intact.
• Glossary & untranslated phrases: Maintain a custom glossary to ensure consistent brand terms, and mark words that should remain in the original language across all translations.
• Character limit enforcement: Set maximum character lengths per language to prevent UI layout issues caused by longer translated strings.
• Reverse translation: Verify translations by reversing them back to the source language using Apple Translate, useful for languages you don't speak.
• Bring your own AI key: For maximum privacy and control, use your own OpenAI or compatible API key with the lifetime plan.

Who Should Use AppUFO

• iOS app developers who need to localize their Xcode projects into multiple languages efficiently without manual effort.
• Indie developers and small studios with limited budgets who want professional-quality localization without hiring translators or services.
• App localization managers who need to maintain translation consistency across multiple apps and languages.

Frequently Asked Questions

What is AppUFO?

AppUFO is a native macOS app that imports Apple's .xcstrings localization files, translates them with AI, and exports them back to Xcode, supporting 36+ languages with features like glossary, character limits, and reverse translation.

How does AppUFO work?

Just drag and drop your .xcstrings file into AppUFO, select target languages, and the AI translates each string while preserving placeholders, format specifiers, and your custom glossary. You can then export the translated file directly into Xcode.

Can I control translation quality?

Yes. You can provide context about your app, maintain a glossary for brand terms, set character limits, and use reverse translation to verify outputs. The "bring your own key" option also lets you use advanced AI models.