Dart / Flutter vs Swift / Native iOS – Which One Is Better?

Nowadays, numerous cellular app development companies are the use of hybrid systems for developing mobile apps because of many reasons. Some startup organizations have budget troubles and they need to develop mobile apps inside a small time span. Here, a detailed comparison of flutter vs swift.

Flutter vs Swift


Swift is a coding language for iOS app improvement widely utilized by programmers worldwide. One of the maximum striking features of this language is that it constantly evolves with converting tendencies and demands. Swift presents iOS builders with green equipment, extensive documentation, and a global community of Swift. This makes iOS app improvement smooth and fun.



Flutter is an open-supply, cross-platform software development kit. Launched and maintained by using Google, this programming language is designed to construct green hybrid apps. This language can use an unmarried codebase and uses a Dart language. This platform also offers specified documentation for every improvement project. Flutter may be very much similar to another popular iOS improvement platform, React Native.

The potential of Flutter to enable each iOS and Android app improvement from an unmarried supply code makes it quite useful. A community of Flutter users is emerging. This will make hybrid app development a greater dynamic.


Flutter vs Swift for iOS development

Every distinct OS app desires some capabilities and technologies precise to it. This is precisely where Swift suits the wishes very nicely. But Since Flutter has come as a smart language for constructing particularly efficient iOS apps, the assessment between the 2 appears obvious.

Flutter vs Swift

Onboarding and installation


The putting in and onboarding for both are terrific and diverging from each other. With Swift, the onboarding relies upon on nearby apparatuses that make use of Xcode as the IDE. For introducing the advancement pack, you need to introduce Xcode within the macOS gadget.


With Flutter, the onboarding system calls for introducing both Flutter parallel to introducing Xcode. Different options like Android Studio and IntelliJ IDEA want to be introduced beforehand. This suggests that flutter calls for extra support at some point in the onboarding to characteristic smoothly.

Development speed


Flutter vs Swift, With Swift, you may easily measure the improvement time just by means of the use of the command referred to as Xcode construct or Xcode. Swift may be very fast-paced and as of now, it appeared to be the speediest for iOS improvement.


With Flutter, you may use a similar command for measuring the development time. But as you cross the edge of initial easy builds, Flutter gets faster.

App testing and documentation


Testing is drastically distinctive in Swift and Flutter. For local iOS apps with Swift, Apple offers XCTest. This is a relatively green platform for trying out native apps. The device gives a wide range of trying out capabilities, inclusive of UI trying out, overall performance trying out, and integration trying out, amongst others. Apple regularly updates the trying out gear as a part of the iOS app development package.


Flutter, too, offers a sturdy trying out the framework as part of its development kit. With Flutter, builders can without difficulty write clean codes proper from the beginning. Other checking out functions enable you to make capability and the unit testing process extra effective.

Clean construct of local iOS (Swift) app

The construct time of native iOS apps may be without difficulty measured with Xcode or the xcodebuild command line device. In Xcode, we are able to enable the build timing precis by using running the following command.

Reloading app

While developing an iOS app, it’s always required to make code modifications and tests inside the simulator or on devices. This process is also known as reloading the app, which is one of the key functions for mobile app improvement.

In order to evaluate both apps, let’s make modifications to our app. Instead of the “Press Me” button, let’s exchange it to “Click Me”. Let’s anticipate that each app are already established and running in the simulator.

Native iOS (Swift)

In order to change the button name, we need to rename the person interface detail from the storyboard, possibly desires to trade Accessibility data too. Once the detail is renamed, we should rebuild the app to see if the adjustments made are contemplated in the simulator.

Flutter has the recent reload feature this means that once we make the modifications inside the code and reload the app, the modifications are pondered in a second. In our case, we just need to replace the text within the `raisedButton` widget from “Press Me” to “Click Me” and reload the app.


This is a dynamic analysis technique that analyzes CPU, resources, memory and other capability elements of the application. Both Swift and Flutter tools offer extraordinary help for app profiling.


Using instruments, you could profile an app in Xcode. You get the option of profiling an app with Product > Profile from Xcode. This will introduce an instrument app in which you could measure the app with the aid of several criteria. For profiling, you could pick out any template. You can select the Time Profiler for reading the CPU threads when you pick out the button many times. Once you release the Time Profiler, you could begin recording and select the button many times.


In Flutter, you may profile iOS packages with the IDE or from the command line. In fact, Flutter documentation has a super guide on Flutter app profiling.


Every Flutter vs Swift discussion might deliver us to the belief that both those structures are fantastic for iOS app improvement. The desire is in the long run yours. And like a maximum of us, that desire would be in large part influenced by means of your specific requirements. For instance, Swift is better when it comes to development time. Whereas, in areas like trying out and documentation, Flutter is the preferred choice. A globally dependent iOS app development company, we extensively use each of these programming languages.