I'll create a mobile-first math tutoring app for Vietnamese students. This app will help middle and high school students solve math problems step-by-step with an AI assistant.

I've created a comprehensive mobile-first math tutoring app for Vietnamese students with the following features:

Key Features:

1. Mobile-First Design: Optimized for mobile devices with responsive layout and touch-friendly interface
2. Vietnamese Language Support: All text and interface elements in Vietnamese

3. Four Main Sections:

   • Trang chủ (Home): Quick problem input, math categories, recent problems
   • Luyện tập (Practice): Practice exercises by category with progress tracking
   • Giải toán (Solution): Step-by-step problem solving with detailed explanations
   • Cá nhân (Profile): User profile, achievements, and settings

Core Functionality:

• Problem Input: Text input and camera option for math problems
• Step-by-Step Solutions: Detailed explanations for each solution step
• Math Categories: Algebra, Geometry, Practical Math, and Advanced topics
• Progress Tracking: Statistics and achievements system
• Recent Problems: Quick access to previously solved problems

Design Highlights:

• Clean, student-friendly interface
• Color-coded categories for easy navigation
• Mobile-optimized bottom navigation
• Card-based layout for better content organization
• Responsive design that works on all screen sizes

The app is designed to help Vietnamese middle and high school students (grades 7-12) learn math step-by-step, from basic to advanced levels, making it perfect for students who need foundational support or exam preparation.