Math Quiz

A simple Android quiz app for practicing basic addition and subtraction

Features

• Addition and subtraction modes
• 10 questions per session with numbers between 1-10
• Score tracking and final results screen
• Elapsed time display
• Supports screen rotation without losing progress

Built with

Kotlin, Android Fragments

What I learned

Implemented manual state preservation across screen rotation using onSaveInstanceState, saving timer and score state to Bundle.