Overview

Learn about Expense Tracker Android - a modern expense tracking app for Android devices.

Expense Tracker Android is a feature-rich mobile application for tracking and managing your expenses on Android devices.

What is Expense Tracker Android?

Expense Tracker Android is a comprehensive mobile application built with Kotlin and modern Android development practices. It helps you manage your personal finances by tracking expenses, analyzing spending patterns, and providing insights through beautiful charts and reports.

Key Highlights

  • Modern Architecture: Built with MVVM architecture, Room Database, and Hilt dependency injection
  • Secure: PIN and biometric authentication to protect your financial data
  • Flexible: Customizable categories, account types, and multi-currency support
  • Portable: Export/import data in CSV or JSON formats
  • Beautiful: Material Design 3 UI with Light, Dark, and System themes

Why Use Expense Tracker Android?

What is it good for?

  • Personal Finance Management: Track daily expenses and understand spending habits
  • Budget Planning: Analyze monthly and yearly spending patterns
  • Data Portability: Export data for tax purposes or financial analysis
  • Privacy-Focused: All data stored locally on your device with optional backup
  • Multi-Device: Backup and restore functionality for easy device migration

Technical Benefits

  • Offline-First: Works completely offline, no internet required
  • Fast & Efficient: Room database with optimized queries
  • Secure Storage: Encrypted SharedPreferences for sensitive data
  • Modern Codebase: Kotlin Coroutines for smooth async operations
  • Well-Tested: Unit tests and instrumentation tests included

What is it not good for?

  • Multi-User Scenarios: Designed for single-user personal finance tracking
  • Business Accounting: Not suitable for complex business accounting needs
  • Real-Time Sync: No cloud sync (by design for privacy)
  • Investment Tracking: Focused on expenses, not investment portfolio management

Technical Specifications

Specification Details
Language Kotlin
Min SDK 26 (Android 8.0)
Target SDK 35 (Android 14)
Architecture MVVM
Database Room
DI Framework Hilt (Dagger)
UI Material Design 3
Build Tool Gradle with KSP

Core Features

📊 Expense Management

  • Add, edit, delete, and search expenses
  • Customizable categories and account types
  • Quick expense entry interface

📈 Statistics & Analytics

  • Monthly and yearly expense breakdowns
  • Beautiful charts (MPAndroidChart)
  • Spending pattern analysis

💾 Data Management

  • CSV and JSON export/import
  • Full backup and restore
  • Settings preservation

🔐 Security

  • PIN-based app lock
  • Biometric authentication (fingerprint/face)
  • Encrypted storage
  • ProGuard code obfuscation

🎨 Customization

  • Light, Dark, and System themes
  • Multi-currency support (USD, EUR, GBP, INR)
  • Custom categories and account types

Where should I go next?

  • Getting Started: Set up your development environment and build the app
  • Examples: See code examples and usage patterns
  • Concepts: Understand the app architecture and design decisions
  • Tasks: Learn how to perform common development tasks