Flutter is a free and open-source mobile UI framework that is created by Google and it was released in May 2017. The purpose of Flutter is to create a native mobile application with only one codebase; means you can utilize only one programming dialect and one codebase to create two different applications that are, for Android and iOS.

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Front end developers use HTML, CSS, and JavaScript to code the website and web app designs created by web designers. The code they write runs inside the user’s browser (as opposed to a back end developer, whose code runs on the web server).

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