Mobile & Full-Stack 2026

Expense Tracker Mobile Application

Cross-Platform Flutter & Node.js Personal Finance Platform

Developed a full-stack mobile expense tracking application with expense management, REST API integration, persistent storage, real-time synchronization, and modular architecture.

System Architecture Flow

Flutter & Dart Mobile Client ↔ REST APIs ↔ Node.js & Express.js ↔ MongoDB Persistent Store

FlutterDartNode.jsExpress.jsMongoDBREST APIs

Repository Link Not Published Public Demo Not Enabled

Project Links Status: Public repository and live demo links are disabled until explicitly published.

Problem Statement

Users tracking personal or day-to-day finances need a fast, intuitive mobile interface backed by reliable cloud persistence and real-time synchronization across sessions.

Architecture Overview

Engineered with a modular Flutter and Dart mobile client communicating over REST APIs with a Node.js and Express.js backend service connected to MongoDB for persistent storage and real-time synchronization.

Flutter & Node.js/MongoDB Mobile Expense Architecture

System Topology

Modular cross-platform Flutter client integrated with a Node.js, Express.js, and MongoDB REST backend for real-time expense synchronization.

Mobile Client Layer

Modular Flutter Application

Cross-platform mobile UI for logging expenses, categorizing transactions, and viewing financial summaries.

FlutterDart

API & Sync Layer

RESTful Expense Service

Structured REST endpoints supporting CRUD expense operations and real-time state synchronization.

Node.jsExpress.jsREST APIs

Persistence Layer

Document Storage

Persistent storage for user expense entries, categories, and historical transaction logs.

MongoDB

Request & Data Flow Lifecycle

1 Users create, edit, or filter expense entries inside the modular Flutter & Dart mobile interface.
2 The mobile client communicates with Node.js + Express.js REST APIs to synchronize changes.
3 MongoDB persists transaction records and returns updated balances and categorized histories in real time.

Key Engineering Capabilities

Cross-platform mobile expense management built with Flutter and Dart
REST API integration with a Node.js and Express.js backend
Persistent transaction storage powered by MongoDB
Real-time synchronization of expense records and categories
Clean, modular mobile and backend architecture

Interface Previews & Screenshots

1 Configured View

Flutter Mobile Expense Management & Real-Time Sync View

Optional screenshot slot: place verified image at apps/web/static/projects/expense-tracker.png

Flutter Mobile Expense Management & Real-Time Sync View Optional Slot