To develop Dart apps, install Visual Studio Code (VS Code) and add the Dart extension.

To install the latest version of VS Code, follow Microsoft's instructions for the relevant platform:

• Install on macOS
• Install on Windows
• Install on Linux

The Dart extension for VS Code supports Dart-specific development capabilities. These include syntax highlighting, package resolution, hot reload, and others.

1. Launch VS Code.

2. Click Extensions in the Activity Bar.
   You can also press Control / Command + Shift + X.

3. In the Search box, type Dart. The first extension returned should be the Dart extension.

4. Click Install.

To review the full list of features, consult the extension documentation.