Ledgex
Ledgex is a modern, production-ready financial ledger management platform designed for individuals and small businesses to track, analyze, and manage financial transactions efficiently. The application consists of a cross-platform React Native & Expo frontend and an enterprise-grade NestJS backend. It supports secure authentication, multi-shop financial management, real-time analytics, categorized transactions, and detailed reporting. Ledgex delivers a seamless experience across iOS, Android, and web while ensuring data integrity, scalability, and performance through a robust backend architecture.
Full-Stack Developer
Personal Project
Overview
Ledgex provides an end-to-end financial management solution enabling users to record transactions, manage accounts and categories, and gain insights through real-time analytics. The frontend delivers a smooth, intuitive cross-platform experience with infinite scrolling, charts, and offline persistence, while the backend ensures secure authentication, role-based access, multi-shop financial isolation, and scalable analytics. The system follows clean architectural principles with modular backend design and reusable frontend components.
Design Screens
Tech Stack
- React Native
- Expo
- TypeScript
- Node.js
- NestJS
- PostgreSQL
Features
- •Secure Authentication System: JWT-based authentication with protected routes and session persistence.
- •Role-Based Access Control (RBAC): User roles enforced at API level for secure data access.
- •Password Security: Encrypted password storage using bcrypt.
- •Refresh Token Support: Secure session management with token renewal.
- •Transaction Management: Create, read, update, delete income and expense transactions with notes and categorization.
- •Advanced Filtering & Search: Filter by date ranges, categories, accounts, and transaction types.
- •Infinite Scroll Pagination: Optimized transaction history loading for performance.
- •Bulk Transaction Operations: Backend support for batch processing.
- •Audit Trail: Historical transaction tracking and integrity validation.
- •Category Management: Predefined and custom categories with hierarchical support.
- •Account Management: Account creation, configuration, balance tracking, and reconciliation.
- •Multi-Shop Support: Manage multiple business entities with isolated financial data.
- •Real-Time Dashboard: Live transaction overview with recent activity.
- •Financial Analytics: Balance calculations, expense breakdowns, and performance metrics.
- •Visual Reports: Chart-based insights with category and period analysis.
- •Custom Report Generation: Backend-powered aggregated analytics.
- •Future-Ready Export Support: Designed for PDF, Excel, and CSV exports.
- •Cross-Platform Support: iOS, Android, tablet, and web compatibility.
- •Responsive UI: Adaptive layouts for all screen sizes.
- •Dark & Light Themes: Theme support with consistent styling.
- •Global Loading & Error States: Unified feedback system.
- •Toast & Alert Notifications: Non-intrusive user feedback.
- •Haptic Feedback: Enhanced mobile interaction experience.
- •Splash Screen & Smooth Navigation: Polished app startup and transitions.
- •Persistent Storage: AsyncStorage for offline-friendly data persistence.
- •API Abstraction Layer: Custom hooks and services for API communication.
- •Caching & Optimization: Efficient data fetching and state updates.
- •Date & Time Utilities: Cross-platform date handling.
- •Modular NestJS Architecture: Feature-based modules for scalability.
- •RESTful API Design: Clean, well-documented endpoints.
- •DTO-Based Validation: Strong input validation and transformation.
- •Interceptors & Guards: Consistent response shaping and request protection.
- •Database Seeding: Automated setup for roles, shops, and categories.
- •Error Handling Strategy: Centralized exception handling.
- •Testing Suite: Unit and E2E testing with Jest.
...and many more, including code architecture and reusability