**3. Flutter app development**

As an application development company in Flutter, we believe this framework will take cross-platform development to the next level. And let’s explore the definition of Flutter, the benefits of developing applications with Flutter, and why everyone in the IT community is always discussing Flutter.

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Flutter is cross-platform

Flutter is an SDK – Software Development Kit developed by Google and first introduced in 2015. People often confuse between SDKs and frameworks. Frameworks are basically pre-built libraries that you just need to add your own code to and your application will come to life. Conversely, an SDK is a much broader concept that includes libraries, frameworks and other tools.

Flutter is developed based on the Dart language developed by Google. It was originally created to build web applications, but has since grown to be used on mobile and desktop as well. Since Dart is an object-oriented language, switching from this object-oriented language to other similar languages performs very well. Let’s dive deep into Flutter’s structure.

Initially, Google presented Flutter as a layered and extensible system. There are three structures:

* **Embedder**

* **Engine**

* **Framework**

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Flutter Architecture

Each level is written in a special language. Since Embedder encapsulates cross-platform applications in native templates, it uses platform-specific languages. (Java for Android, Swift and Objective-C for iOS, C++ for Linux and Windows). The language of the Engine is C or C++. The aim is to connect Flutter’s low-level APIs to each other. Framework is based on Dart. Let’s take a closer look at how each level works.

Embedde is the most basic level. Without Embedder, the whole Cross-platform concept is destroyed. Embedder launches applications on any operating system. Provides access to many services such as event loop, input, accessibility and other services. Embedder allows you to put some of your Flutter code into your existing application’s code. The embedder feature of this framework is one of the biggest advantages of developing applications with Flutter.

**Engine** is the heart of Flutter. This is where most of the process comes into play. You will be responsible for:

**Graphics (including rasterization). **

* **Input/Output。**

** Render subsystem. **

* **Plugins。**

** App accessibility. **

**Dart compiler and runtime. **

In each process, the Engine uses the Dart library dart: ui.

Skia graphics is the engine responsible for graphics display. This is one of the main advantages of Flutter. It is open-source written in C++. You can draw fast and smooth animations (60fps or more). This 2D library contains many platform-specific APIs. **Skia is *used* in Google Chrome, Android, Mozilla Firefox** and other applications.

Most processing tasks work at the Flutter level. It contains many libraries that let you work with animations, interactions, layouts, and more. Each Element in Flutter is a Widget. This makes Flutter very flexible and highly customizable to the developer’s wishes. Best of all, Flutter is open-source, so you can look at the code of even the smallest component and even modify it.

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*Everything is Flutter Widgets*

Flutter also has a feature called Hot Reload. With Hot Reload, you can see your code changes immediately without restarting your application.

Other than that, Flutter comes with a very beautiful UI built in that fits all modern designs. Many other frameworks require you to specifically create a state on a UI element and then update it based on previous events. The problem here is that if something changes in the application, I need to connectively monitor the changes and update the interface throughout the code. Sometimes even unrelated code will error out due to unauthorized changes in the interface.

Flutter provides a decent solution to your problem. Cut the interface from the processing code. This is one of the most important advantages of Flutter as it greatly reduces the development process. Just describe what your smartphone UI looks like and Flutter will do the rest.

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Flutter pros and cons

Apart from the above benefits, developing applications with Flutter also has the following benefits: **

**High performance applications. **

**Code rules are strict, secure and highly scalable. **

**The Flutter framework provides various error handling tools that make debugging more efficient. **

Due to the above advantages, the following companies use Flutter.

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* **Google Ads**

* **Alibaba Group**

* **Reflectly**

* …

Flutter has many advantages, but it still has certain limitations. The large application size is probably one of the most frustrating things about Flutter. However, I see no difference between Flutter and ReactNative as other frameworks should have issues as well. But if the “HelloWorld” application is about 7MB, I think that’s a bit too much.

Some say that developing iOS applications with Flutter can be problematic. The reason is that it was created by Google, so Android is better supported than iOS. But it’s not.

The Dart language has limitations as well as advantages. Dart is still a new language, so it’s hard to scale a team with developers using Flutter. Clearly, many aspiring professionals are very likely to choose other long-used languages.

Overall, application development is quick and easy with Flutter, even though this technology has some limitations. That’s why this framework is regarded as the Best Cross-platform Application Framework in 2020. So, if you want to keep up with the latest trends, Flutter framework is a reasonable choice as all the advantages of Flutter framework can take your project quality to a new level.