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Flutter is a free and open source programming toolkit from Google. Its purpose is to build apps and interfaces for iOS and Android, through the Dart programming language. Easily integratable with iOS and Android codebases, Flutter has become a very popular toolkit for designing and building web and desktop applications. A Flutter course on Udemy is a great addition to any skill set.
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Frequently asked questions about Google Flutter

Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop from a single codebase. Flutter was originally launched with support for iOS and Android. Flutter 2 was launched as a stable release in March 2021, with support for Windows, macOS, Linux, and web. Flutter runs with Dart, a programming language developed by Google. Dart is a strongly-typed, object-oriented language with a familiar C-style syntax. Developers can compile Dart programs into fast native code that runs smoothly on all supported platforms. On the web, Dart is compiled to JavaScript code that can run on the browser. Flutter is composed of three architectural layers: the Flutter framework, which is written in Dart and provides all the widgets that developers use to build their apps; the Flutter Engine, written in C++, which provides low-level rendering support with Google’s Skia; and the platform-specific Embedder, which talks directly to the operating system.
Flutter, first known as “Sky”, was announced in 2015 with Android support only. It was created to provide a better mobile experience for users and developers, taking the best parts of the web development experience, and bringing them to mobile. Its main goals were high-performance and portability across multiple platforms. While other cross-platform solutions such as React Native and Xamarin were already popular, they could not deliver the same fidelity and performance as apps built with the native iOS and Android SDKs. Flutter changed that by making it possible to create beautiful, performant apps across multiple platforms with a single codebase.
Flutter has been a production-ready, stable product on iOS and Android since its official launch in December 2018. Big companies such as eBay, BMW, Alibaba, and Toyota are using Flutter as the core framework for their mobile app development strategy. Over a hundred thousand Flutter apps have already been published on the App Store and Play Store. After overtaking React Native in Google Search trends, Flutter is now the fastest growing software project on GitHub. By choosing Flutter, companies can deliver mobile apps in record-time as they no longer have to build separate apps to support iOS and Android. This makes Flutter an ideal choice for startups, agencies, and small businesses, and as a result, the job market for Flutter developers is also expanding rapidly.
There are social networking apps for creating and sharing content, dating, and connecting people through events and real-life activities that use Flutter. Alibaba made a shopping app called Xianyu, which has more than 50MM downloads and more than 10MM active users every day. Nubank is the largest independent digital bank outside Asia, and its mobile apps are built with Flutter. Another shopping app is HuYu, which rewards users with gift cards and vouchers for sharing shopping receipts. You can also find music apps for recording and learning to read music. The Hamilton Musical and the famous Abby Road Studios created apps with Flutter. There are apps for sports, finance, fitness, education, animal adoption, mapped gas stations to compare prices, and a travel app. A Google Ads app helps mobile app customers track their ads. Users can view statistics, update bids and budgets, and get real-time notifications.