ExpensAI

ExpensAI is an intelligent expense tracking application that combines traditional financial management with AI-powered insights. Built for Android using modern architecture and best practices, it helps users manage their finances more effectively through smart receipt scanning, automated categorization, and personalized spending insights.

🌟 Key Features

• Smart Receipt Scanning: Automatically extract transaction details from receipt photos using computer vision
• AI-Powered Insights: Get personalized spending analysis and recommendations
• Real-time Transaction Tracking: Monitor expenses and income with an intuitive dashboard
• Customizable Categories: Organize transactions with user-defined categories
• Spending Goals: Set and track monthly spending limits and savings goals
• Visual Analytics: View spending patterns through interactive charts
• Cloud Sync: Secure data synchronization with Firebase
• Multi-user Support: Individual user accounts with personalized preferences

🛠️ Technology Stack

• Frontend: Native Android with Kotlin
• Architecture: MVVM (Model-View-ViewModel)
• Database: Room Persistence Library
• Authentication: Firebase Auth
• Cloud Storage: Cloud Firestore
• AI/ML Services:
  • OpenAI GPT-4 for transaction analysis
  • Computer Vision for receipt processing
• Charts: MPAndroidChart
• Dependency Injection: Manual DI with ViewModelFactory
• API Communication: Retrofit2

🏗️ Architecture

The application follows clean architecture principles and is organized into the following key components:

• UI Layer: Activities, Fragments, and ViewModels
• Data Layer: Repositories, DAOs, and Remote Data Sources
• Domain Layer: Use Cases and Business Logic
• Cloud Services: Text and Vision microservices for AI processing

🔒 Security Features

• Secure user authentication via Firebase
• Local data encryption with Room
• Safe API communication over HTTPS
• Protected cloud functions with proper authentication

🚀 Future Enhancements

• Budget forecasting using AI
• Expense sharing between users
• Export functionality for financial reports
• Advanced analytics dashboard
• Custom notification rules

🛠️ Setup and Installation

1. Clone the repository
2. Add your google-services.json file to the app directory
3. Configure your API keys in the appropriate configuration files
4. Build and run using Android Studio

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.