University Timetable Pro — Published Android Student Productivity App

University Timetable Pro is a React Native and Expo-based Android application designed to bring essential university planning tools into one mobile experience. I designed, developed, tested, and released the application on Google Play.
The app combines multiple student workflows, including timetable management, attendance tracking, remaining-absence calculations, lecture reminders, alerts, and activity planning. It also includes short cognitive challenges focused on memory, logic, and reflexes, together with daily engagement features.
My work included:

• Building the mobile UI with React Native and Expo
• Implementing timetable and attendance-management logic
• Local data persistence and application state handling
• Notifications and lecture reminders
• Responsive Android UI and navigation
• Debugging and real-device testing
• Android release-build preparation
• Google Play publishing and release validation
• Privacy and store-readiness preparation
  Technologies: React Native, Expo, JavaScript, Android, local persistence, notifications, Git/GitHub
  Google Play: https://www.twine.net/signin
  This project gave me practical experience taking a mobile product from an initial idea through implementation, testing, debugging, and production release.