Expense Tracker
Personal Finance Management Mobile App Case Study
A comprehensive React Native mobile application designed to revolutionize personal financial management. Built with modern cross-platform technologies and Firebase backend services, this app provides seamless expense tracking, multi-wallet management, and real-time analytics across iOS, Android, and Web platforms with intuitive user experience and robust data synchronization.
Project Overview
The Expense Tracker represents a modern approach to personal finance management, built as a comprehensive React Native application with Firebase backend integration. This cross-platform solution addresses traditional expense tracking challenges through intuitive multi-wallet management, real-time transaction synchronization, and advanced analytics, providing users with powerful tools for financial awareness and budget planning across all their devices.
Multi-Wallet Management
Users can create and manage multiple wallets for different financial purposes - personal expenses, business costs, savings goals, and more. Each wallet maintains independent balance calculations, transaction histories, and spending analytics. The system automatically calculates total income and expenses per wallet, providing clear financial insights and helping users organize their finances across different categories and purposes.
Visual Analytics Dashboard
Comprehensive analytics dashboard featuring interactive charts, spending breakdowns, and trend analysis. Users can view their financial data through pie charts, bar graphs, and timeline visualizations, with filtering capabilities by date range, category, and transaction type. The dashboard provides insights into spending patterns, category-wise analysis, and helps users make informed financial decisions based on their historical transaction data.
Smart Transaction Tracking
Streamlined transaction entry with one-tap actions, category selection, and receipt attachment capabilities. The app supports both income and expense tracking with 12+ predefined categories, custom descriptions, and image uploads for receipts. Advanced search and filtering functionality allows users to quickly find specific transactions, while the intuitive interface makes expense entry quick and effortless for daily financial management.
Key Features
Comprehensive tools for modern personal finance management
Secure Authentication
Firebase Auth with email/password for secure user management and data protection
Multi-Wallet Management
Create and manage multiple wallets for different financial purposes and categories
Transaction Tracking
Comprehensive income and expense tracking with detailed categorization system
Visual Analytics
Interactive charts and statistics for spending analysis and financial insights
Receipt Management
Upload and attach receipt images with cloud storage integration
Cross-Platform App
Works seamlessly on iOS, Android, and Web with native performance
Real-time Sync
Cloud-based data synchronization with offline support and automatic backup
Smart Search
Advanced search and filtering capabilities for quick transaction discovery
Financial Insights
Spending trends, category breakdowns, and personalized financial recommendations
Data Security
End-to-end encryption with Firebase security rules and secure cloud storage
Project Statistics
React Native Components
Firebase Collections
Transaction Categories
Cross-Platform Support
Mobile Architecture
Built with React Native 0.79.6 and Expo 53.0.22 for cross-platform development. TypeScript ensures type safety, while Expo Router provides file-based navigation. The app leverages React Context for state management and includes smooth animations with Reanimated for enhanced user experience.
Firebase Backend
Comprehensive Firebase integration including Authentication for secure user management, Cloud Firestore for real-time database operations, and Firebase Storage for image uploads. The system includes offline support, automatic synchronization, and robust security rules for data protection.
Firebase Database Schema
Optimized Firestore collections for efficient financial data management
Users Collection
- • User Profile Data
- • Authentication Info
- • App Preferences
- • Settings & Privacy
Wallets Collection
- • Wallet Information
- • Balance Calculations
- • Income/Expense Totals
- • Custom Images
Transactions Collection
- • Transaction Details
- • Category Classification
- • Receipt Images
- • Timestamp & Meta