The Problem Every Flutter Developer Hits on Day One You write your first Flutter web app. You run it. It opens in a browser tab β full screen, desktop layout, no device frame, no mobile context whatsoever. You squint at it and try to imagine how it will look on a phone. You resize the browser window manually. You toggle Chrome's device toolbar, which gives you a rough approximation but none of the feel of a real device. You switch between your editor and your browser constantly, losing focus every time. Then you want to test device rotation. Or check how your UI holds up on a smaller screen like a Galaxy A series phone versus a larger one like a Pixel 7 Pro. Or capture a clean screenshot for your app store listing. For each of these things, you either need a physical device connected via ADB, an Android emulator running alongside your editor eating your RAM, or a series of workarounds that pull you further and further away from the code you are actually trying to write.β¦