What is Flutter?

Flutter is a mobile app SDK for building high-performance, high-fidelity, apps for iOS and Android, from a single codebase. Flutter 1.0 launched in December 2018. Mobile app development is a relatively recent field of endeavor. Third-party developers have been able to build mobile apps for less than a decade, so it is no surprise that tools are still evolving.

Flutter has been around already since 2015 when Google first introduced it, but the buzz around it has grown stronger only lately.

It’s a cross-platform tool intended for creating Android and iOS apps from a single code base by using a modern, reactive framework. Flutter apps are built using Dart, a simple object-oriented programming language.


The goal is to enable developers to deliver high-performance apps that feel natural on different platforms. We embrace differences in scrolling behaviors, typography, icons, and more.

Any developer can work on this no need any Mobile development experience to get started. The Apps are written by DART, which looks familiar if you have used a language like JAVA or JAVASCRIPT.  You have experience with Object-oriented language so that will definability helps you, but If you don’t have you can also make Flutter apps!


Why use Flutter?

Without making any comparisons with other platforms, here’s a list of some of the features and qualities that may make you consider having a go at Flutter:

1. Open-source: Flutter and Dart are open-source and free to use, and provide extensive documentation and community support to help out with any issues you may encounter.

2. High Productivity: Flutter is cross-platform, you can use the same code base for your iOS and Android app. Flutter can definitely save you both time and resources.

3. Great performance: Dart compiles into native code and there is no need to access OEM widgets as Flutter has its own. This means less mediated communication between the app and the platform.

4. Benefit from a rich set of Material Design and Cupertino (iOS-flavor) widgets built using Flutter’s own framework.

5. Realize custom, beautiful, brand-driven designs, without the limitations of OEM widget sets.


Basic Principles of Flutter.

Flutter includes a modern react-style framework, a 2D rendering engine, ready-made widgets, and development tools. These components work together to help you design, build, test, and debug apps.

1. The Platform SDKs,

The Apple iOS SDK was released in 2008. Where the Google Android SDK in 2009. These 2 SDKs were based on different languages: Objective-C and JAVA.

2. Everything is a Widget.

Widgets are basic building blocks of a flutter app’s user interface. Other frameworks that separate views, view controllers, layouts and other properties, Flutter has a consistent, unified object model: the widget.

A widget can define:

  •  a structural element (like a button or menu)
  • a stylistic element (like a font or color scheme)
  • an aspect of the layout (like padding)


Inheritance of Composition.

Widgets are themselves often composed of many small, single-purpose widgets that combine to produce powerful effects. For example, Container, a commonly-used widget, is made up of several widgets responsible for layout, painting, positioning, and sizing. Specifically, Container is made up of LimitedBox, ConstrainedBox, Align, Padding, DecoratedBox, and Transform widgets. Rather than subclassing Container to produce a customized effect, you can compose these, and other, simple widgets in novel ways.

The class hierarchy is shallow and broad to maximize the possible number of combinations.




You can control the layout of a widget using composing it with other widgets. To understand why a widget renders in a certain way, it’s often helpful to inspect the neighboring widgets.
The class hierarchy is shallow and broad to maximize the possible number of combinations.

Importance of Layer

The Flutter framework is organized into a series of layers, with each layer building upon the previous layer.


You can see the upper layer of the framework is used mostly used to lower layers. The Goal of this design is to help you do more with less code. The layer offers many options for building apps. Choose a customized approach to unlock the full expressive power of the framework, or use building blocks from the widgets layer, or mix and match.

Everything you can see. You reap the productivity benefits of a high-level, unified widget concept, without sacrificing the ability to dive as deeply as you wish into the lower layers.


I have not fully described the flutter in my blog, Its a normal overview of Flutter. You can take deep knowledge with  Flutter official website where you get all data.

Freelancer Groups use this technology for our some clients and hopefully, we will launch the app. After few year Mobile app development Company will use this technology. For now, 5% of apps are live on the Apple store and Google play store right now.

If you want or find Mobile App Development Company for creating any kind of apps in cheap rates Feel free to contact Freelancer Groups.

Hope you like the blogs, all the data and facts got by Websites:

  • The Flutter website
  • The source repositories (pull requests welcome!)
  • More helpful links.

Thanks for reading my blog!

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