How Flutter Works

Flutter is not just a framework, it’s a complete SDK for building apps. That means Flutter contains everything needed to create a user interface (UI), including the widgets for Material Design and Cupertino. They allow developers to render the UI on both iOS and Android easily.

What is Flutter programming language? Apps built with Flutter use Dart which applies to both client- and server-side development. Dart is an open-source and object-oriented programming language also created by Google.

Along with Dart, there’s high-speed C++ in Flutter’s core. The resulting app produces such high fps (60 or 120 fps animations) it feels like a native one.

Why Use Flutter? Pros & Cons

In this part, we’re talking about Flutter’s advantages and limitations covering both business and tech sides.

Benefits of Flutter App Development

Apps developed with Flutter cater to both business owners by offering good quality for reasonable costs, and tech specialists by providing great usability and speed.Let’s see how exactly.

1. Flutter apps are budget-friendly

Apps developed in Flutter don't take much time to build, and thus they are not as expensive as native apps are. It’s is perfect for MVP startups when you need to test your business model fast: Flutter app development cost will be lower compared to native development for two platforms.

Besides, you don't have to keep a large staff of Android and iOS developers: you’ll need no more than a couple of engineers on the team.

2. Native-like performance

In terms of performance, Flutter = native real-time app.

As we've mentioned, the framework aims to provide 60 fps performance or 120 fps performance on devices capable of 120Hz updates. Apps made in Flutter don't need a bridge to interact with native components (which affects performance) as other frameworks do.

In their latest 1.17 update, Flutter devs made a bet on performance:

• reduced CPU and GPU usage by 40% for simple iOS animations

• speed-up by 20% to 37% for the default navigation case

• memory reduction by 70% in fast scrolling through large images

3. Development goes faster

To get the look and performance of native apps, mobile developers used to build two separate applications using different languages – Swift/Objective-C for iOS and Java/Kotlin for Android.

Flutter lets programmers use a single codebase, unify their teams, reduce risk, and speed time-to-market. All while getting the benefits of native look and performance.