# Introduction Flutter is Google’s mobile UI framework for crafting high-quality native interfaces on iOS and Android in record time. Flutter works with existing code which is used by developers and organizations around the world, and is free and open source. [Flutter E-Commerce UI kit](https://fluttermarket.com/view/flutter-e-commerce-app-theme) can be used for e-commerce applications in android and ios devices. It contains several screens with a different type of UI, Flutter E-Commerce UI kit can save your time to code all Front end layout. Easy to connect with your back end. The visual design can easily be customized. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://emrade.gitbook.io/flutter-e-commerce/master.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.