a9upam/swiftFulThinking_Training ? reverse-engineered prompt

Build me a simple Swift training app in Xcode called FirstDemo.

I want it to be a clean starter project that shows the basics of Swift and gives me something I can run right away in the simulator. Make the app feel like a small demo, with a simple home screen, a couple of easy UI elements, and a second screen or two that show basic navigation and state changes. Keep the code readable and beginner friendly, with comments where it helps explain what is going on.

Please make sure it opens and runs without errors, and structure it so it would be easy to keep adding more practice exercises later. If you need to check current Apple docs or best practices, look them up online. Focus on making it feel like a solid learning project rather than a polished production app.