I've created AltCoin Boy, a mobile-first cryptocurrency tracking app with a rock music theme! 🤠

Key Features:

🎸 Rock-Themed Design:

• Dark gradient background with purple/pink accents
• Music and lightning bolt icons
• "Rock Star Trader" badges and level system
• Cowboy emoji integration matching your description

📱 Mobile-First Interface:

• Responsive design optimized for mobile devices
• Bottom navigation for easy thumb navigation
• Card-based layout for touch-friendly interaction
• Proper spacing and sizing for mobile screens

💰 Cryptocurrency Features:

• Portfolio overview with total value and daily changes
• Individual coin holdings with amounts and values
• Live market prices with trending indicators
• Support for popular altcoins (BTC, ETH, DOGE, ADA, SOL)

🎵 Interactive Elements:

• Tab-based navigation (Portfolio, Market, Profile)
• Animated trend indicators (up/down arrows)
• Gradient cards and buttons
• User profile with trading stats and achievements

The app captures the fun, energetic vibe of "Let's Rock together" while providing practical cryptocurrency tracking functionality. The design uses a dark theme with vibrant accents that would appeal to crypto enthusiasts who want to "rock" their trading journey!