I've created a comprehensive mobile IQ test app with the following features:

Key Features:

• Mobile-First Design: Optimized for mobile devices with responsive layouts
• Welcome Screen: Attractive landing page with app features highlighted
• 8 IQ Questions: Diverse question types including logic, patterns, sequences, and reasoning
• Progress Tracking: Visual progress bar showing test completion
• Real-time Scoring: Intelligent scoring system based on question difficulty
• Detailed Results: Shows IQ score, category, global percentile, and accuracy
• Retake Functionality: Users can retake the test to improve their score

Design Elements:

• Clean, modern interface with gradient backgrounds
• Card-based layout for better mobile experience
• Interactive radio buttons with visual feedback
• Progress indicators and status updates
• Professional color scheme (blues, greens, purples)
• Responsive typography and spacing

Scoring System:

• Questions have different difficulty levels (1-3 points)
• IQ score calculated on standard scale (average 100, std dev 15)
• Percentile ranking compared to global population
• Categories from "Below Average" to "Very Superior"

The app provides an engaging and professional IQ testing experience optimized for mobile devices, with immediate results and the ability to retake the test for improvement.

I've added comprehensive language selection functionality to the IQ test app! Here are the key improvements:

New Features:

• Language Selector: Dropdown button on the welcome screen showing current language with flag
• 10 Languages Supported: English, Spanish, French, German, Chinese, Japanese, Korean, Portuguese, Russian, and Arabic

• Complete Translation: All UI text is now translatable including:

  • Welcome screen content
  • Test interface
  • Results screen
  • IQ categories
  • Button labels and instructions

How it Works:

1. Language Button: Users see their current language with a flag emoji
2. Dropdown Menu: Clicking reveals all available languages with flags
3. Instant Switch: Selecting a language immediately updates all text
4. Persistent Selection: Language choice is maintained throughout the test

User Experience:

• Clean, mobile-optimized language selector
• Visual flags make languages easy to identify
• Smooth transitions between languages
• All text properly localized including technical terms
• Maintains the same professional design across all languages

The app now provides a truly international experience, allowing users from different countries to take the IQ test in their preferred language while maintaining the same high-quality assessment and results presentation.