I’m building MyCalc, a lightweight calculator app exclusively for Android phones. The goal is straightforward: deliver a clean interface that handles the four basic arithmetic operations, lets users toggle between light and dark themes, and keeps a running calculation history that they can view or clear at any time. MyCalc is a clean and easy-to-use Android calculator designed for smooth everyday calculations. It keeps the interface simple, works well in light and dark modes, and saves your calculation history automatically. Built using MVVM, it stays stable during rotation or multitasking. The layout is fixed to avoid overlap with gesture and 3-button navigation. MyCalc reflects solid UI design, Kotlin skills, and offers room for future upgrades. Key Features: Smooth basics Auto history in room database Light/Dark themes Clear colours MVVM stable No data loss No bugs You’re free to use either Kotlin or Java, as long as the final APK runs smoothly on current Android versions and the codebase follows standard Android Studio project structure. Deliverables: • Production-ready APK • Well-commented source code (Git-ready) • Short README explaining build steps and how the history and theme switch are implemented I’ll test the app on a range of Android devices to confirm: – all basic operations calculate correctly – dark mode respects system settings or manual toggle – history list persists during the session and clears properly – UI remains responsive on different screen sizes Once these checks pass, the project is complete.