I need a very lean Android application whose only purpose is to let a single user see whether a sports ground is free or already booked at given times. No multi-user handling, no payment gateway, and no push notifications are required. Core flow • On launch, the user lands on a clean screen that shows today’s date and an easy way to move forward or backward on a calendar. • Selecting a date instantly displays the list of hourly slots (or any sensible time division you suggest) marked as “Available” or “Booked.” • Behind the scenes, availability can live in a lightweight local database or a simple cloud sheet—whichever gets us up and running fastest. I just need an admin-facing way (even a JSON file or hidden screen) to flip slots from free to booked. Tech expectations – Native Android in Kotlin or Java. – Clear, well-commented source code and a compiled APK. – Minimal dependencies; Android Studio project that opens and builds without extra setup. Acceptance criteria 1. Install the APK, open the app, and immediately see availability for today. 2. Navigate to any future date and view correctly loaded slot statuses. 3. Update a slot’s state in the data source; relaunch the app and verify the change reflects accurately. 4. Code passes a quick review for readability and uses standard Android UI components. If a quick wireframe or mockup helps you quote accurately, let me know and I’ll supply one right away.