Did you ever want to develop cross-platform application from one single code base? Are you afraid of getting worse performance than with native code? Flutter may help you! Flutter is an open-source cross-platform software development kit which allows you to create native applications. As is does not use JavaScript it won't require a hole WebView in the background. Due to this and the incredible easy syntax it is one most advanced frameworks for applications running on mobile devices, on the web and on desktops. In this talk, I will introduce the basics of Flutter and its programming language Dart, the differences to other frameworks and some details about Flutter's structure.