The Expense Categorizer is an Android application that combines Export data and Category management, built with SQLite. The project follows a clean app architecture where UI, logic, and data stay separated, making it easy to test, extend, and present. It showcases practical Android techniques while producing a working, demo-ready app.
Users struggle to do this task conveniently from their phone because existing solutions are complex, slow, or missing. Without an Android app built on Category management and SQLite, there is no simple, mobile-friendly way to manage the workflow with clear results.
This project applies Android development techniques through Export data, orchestrated with SQLite and Category management. The app is designed for usability and performance, with smooth navigation, validation, and error handling. It produces consistent, reusable results and can be adapted to related tasks with minimal changes.
SQLite
Android Studio
Java / Kotlin
Material Design
Room / Firebase
Room Database
MPAndroidChart
Clean Android app with Export data and Category management
Mobile friendly UI with navigation and validation
Local data persistence and offline support
Clear feedback, error handling, and states
Reusable components for related features
Tested, maintainable Android code
The project follows an Android app architecture: the view layer handles UI and navigation through Export data; the logic layer manages app behaviour with SQLite and Category management; and the data layer stores information via Report charts. Shared utilities, validators, and themes support all layers, keeping the app robust and easy to extend.
Set up the Android project, Gradle, and dependencies.
Build the UI and navigation flow with Export data.
Implement the app logic using SQLite and Category management.
Add the data layer and persistence via Report charts.
Wire up end-to-end flows with validation and error handling.
Test on emulator and device, then refine features.
Build the APK, document the project, and prepare the demo and viva report.
Build complete Android applications
Apply Building charts in Android and Transaction workflows
Design mobile UI and manage app state
Work with Android databases and services
Present and defend a complete Android project in viva
Add a cloud backend with Firebase
Add user accounts and synchronization
Publish the app to the Play Store
Add analytics and push notifications
The Expense Categorizer delivers a complete Android workflow — from UI and navigation to data and logic. It is practical, modern, and easy to explain, making it an excellent final year project that demonstrates in-demand Android development skills.
