Meu Bolso: uma aplicação web para gestão e projeção de gastos e receitas para famílias

Abstract

This paper presents the development of the web application “Meu Bolso,” aimed at assisting families in managing their finances through automation, intuitive visualization, and budget planning. The project emerged from the common difficulty faced by Brazilian families in effectively tracking income and expenses, often due to the lack of user-friendly tools and the reluctance to manually input financial data. The application was developed following agile methodologies, using Angular for the frontend, Node.js for the backend, and SQLite as the database. It supports importing Open Financial Exchange (OFX) bank statements, automatic transaction categorization based on user-defined rules, and category-based budget projections, providing a clear analysis of the user’s financial situation. Each transaction is stored uniquely to prevent duplication and ensure data integrity. Functional and integration tests were performed during development, as well as usability tests with real users using the System Usability Scale (SUS), resulting in an average score of 90. One issue identified during testing was users’ unfamiliarity with the OFX format, which initially impacted perceived complexity, although it did not hinder overall usability. As outcomes, the project delivers a robust solution that transforms raw banking data into actionable financial insights, aiding in conscious decision-making and promoting financial literacy. The system features dashboards, visual comparisons, and administrative tools to manage categories and classification rules, addressing gaps found in similar existing tools. “Meu Bolso” thus emerges as an accessible alternative for personal finance management, with future potential to incorporate Open Finance integration and intelligent recommendation systems for savings and investment strategies.