A Mobile-Based Personal Finance Management & Expense Tracking System for Real-Time Financial Data Visualization

The Personal Finance Management and Expense Tracking System demonstrates the efficacy of combining modern web technologies—React.js, Python Flask, SQLite, and Firebase—with rigorous mathematical monitoring algorithms to deliver a production-grade personal finance platform. The system achieves all primary design objectives: 187 ms average chart rendering, 100% budget alert accuracy, 75% reduction in transaction entry time, 100% offline synchronization success, and an SUS score of 82.5 (Excellent). By providing a fully open-source, locally-deployable alternative to subscription-based commercial applications, this work contributes a viable financial management solution for the 250 million students and first-time earners in India’s Tier-2 and Tier-3 cities who are currently underserved by existing FinTech products. The mathematical framework for the Savings Ratio (SR) and Alert Status (AS) mechanisms provides a formal, quantifiable basis for financial health monitoring that extends beyond the heuristic approaches found in consumer applications. The decoupled MVC architecture—JWT-secured Flask REST API, normalized SQLite schema with indexed foreign keys, and client-side Recharts visualization—establishes a replicable, academically transparent template for future finance tracking systems. The System Usability Scale score of 82.5 and the 87% daily-use intent rate among pilot participants confirm that the system transcends the academic prototype stage and is ready for real-world adoption. Future work will focus on integrating predictive NLP and LSTM models to transition the platform from reactive monitoring to proactive financial guidance.

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