SmartSpend is a personal budget management application centered on user interactions with core financial workflows. The system enables users to authenticate, view budget summaries and category breakdowns, perform CRUD operations on budget categories, explore transaction details, and manage session lifecycle. This use case diagram maps nine distinct user actions—from login through logout—establishing the functional scope and user journey for budget tracking and category management. Fork this diagram on Diagrams.so to customize workflows, add new use cases like recurring transactions or budget alerts, or integrate with your product roadmap documentation. The actor-centric design makes it ideal for requirements gathering, stakeholder alignment, and sprint planning in agile finance app development.