I need an end-to-end Android application that lets users calculate profit and loss quickly through clean, intuitive data-entry screens. Everything will be entered manually—no file imports or API feeds—so the core of the job is designing streamlined forms where the user can add, edit, and delete revenue and expense items, then see the resulting totals update instantly. Here’s what matters most: • Smooth Material-style UI/UX that works on recent Android versions. • Reliable arithmetic behind the scenes with clear separation between UI and business logic so future features (charts or CSV exports) can drop in without a rewrite. • Local persistence—Room, Realm, or another lightweight solution—to keep entries when the app is closed. No server side needed. • A summary screen showing total revenue, total expenses, net profit or loss, and a simple color cue (green for profit, red for loss). Deliverables: 1. Signed APK for testing and the final release build. 2. Well-commented Android Studio project with all source code. 3. One-page setup/readme explaining how to run, build, and extend the project. If you’re comfortable with standard Android libraries (Kotlin or Java, Room, ViewModel, LiveData/StateFlow) and can turn this around quickly, let’s get started.