One of Flutter's primary goals is to create a framework that allows you to develop apps from a single codebase that look and feel great on any platform.

This means that your app might appear on screens of many different sizes, from a watch, to a foldable phone with two screens, to a high definition monitor. And your input device might be a physical or virtual keyboard, a mouse, a touchscreen, or any number of other devices.

Two terms that describe these design concepts areadaptive andresponsive. Ideally, you'd want your app to beboth but what, exactly, does this mean?

An easy way to think about it is that responsive design is about fitting the UIinto the space and adaptive design is about the UI beingusable in the space.

So, a responsive app adjusts the placement of design elements tofit the available space. And an adaptive app selects the appropriate layout and input devices to be usablein the available space. For example, should a tablet UI use bottom navigation or side-panel navigation?

• General approach
• SafeArea & MediaQuery
• Large screens & foldables
• User input & accessibility
• Capabilities & policies
• Best practices for adaptive apps
• Additional resources