Battle Between Kotlin Vs Flutter: The Best One for Cross-platform App Development!

Kotlin Vs Flutter

Construction of the mobile application has been the fundamental pillar of the tech organization. It has become life and blood for some businesses that are around the market. And when it comes down mobile app – cross-platform is something that has to be in the picture. Business enthusiasts and mobile app development companies have reluctantly relied on two frameworks, namely – React Native and Flutter.

Believe it or not, but due to the increasing popularity of all mobile apps, almost every organization requires a mobile app. These apps help in remaining competitive in the business and the market world. Organizations are searching the stack behind top companies for an option to construct mobile apps, especially for iOS and Android, with a feature where they can have a faster speed and fewer resources.

Thus, to eradicate the confusion over platform selection, we have explained and presented our users with a detailed explanation on the merits and demerits of kotlin as well as flutter.

But before anything, the App Development Company needs to know what exactly are these two frameworks.

An Overview on Kotlin and Flutter: What Does it Offer to the Audience

Before you start to Hire App Developer for your framework makes sure that you are aware of the two platforms.



A front-end library for Android and iOS, flutter is one of the most talked-about platforms. When it is being discussed; there are possible two situations that tend to comes across.

  • Flutter app manages to distinguish and secure the application as if they were a website and then protects the web view into a native application.
  • It also protects the native controls, and would then mould with the cross-platform construct.

Although flutter goes up with different approach from another cross-platform mobile development framework when they handle to create a mobile with flutter, it yields the user with an engine that is compact runtime to host the application. Not only this but flutter is produced on the skin graphics library, which leads to investing the user with widgets that are fulfilled.



Emerging out as one of the most immediately adopted languages, Kotlin (which is supported by Google) is considered as the standard language for Android App Development (declared in I/O 2017). Designed by JetBrains, the programming language is based upon Java Virtual machine. It is uniquely interoperable with java and its functional pieces. Hence, introducing the developers with new development properties.

Functional programming can let developers determine tasks swiftly and continuously. This manages to enhance production via inclining. Kotlin was developed to manage JVM is mind. This was done to make the programming language reliable for any design that manages to operate JVM in its system.

The codes that are there in kotlin are considered reliable and trustworthy because the language overrides common programming misconceptions that result in fewer application crashes and system failures.

Kotlin Vs Flutter: Cross-platform App Development Features

For the Mobile App Development Company let’s see both these platforms in a much more broader version and figure out what they have to offer its audience.

1. Performance

Flutter: One of the biggest advantages of using flutter is that it provides organizations with hot reloading functionality. The functionality tends to make it really easy for the users to make any modifications at the backend and also view the difference at the front-end concurrently. This way it becomes really easy to decide if the looks are perfect for the elements of applications or not.

Kotlin: One of the biggest advantages of considering kotlin language for cross-platform development is that multiplatform compiles the code to the explicit with the same format as the targeted platform. This makes it a reliable platform for good performance in their native counterparts.

2. UI Experience

UI Experience

Flutter: By investing in flutter application development, developers manage to get the opportunity to utilize different types of widgets in the development environment. This makes it really easy for the users to construct mobility solution ions that is faster and has customized look and feels.

Kotlin: Kotlin multiplatform does not demand the user or the developer to follow any kind of instructions for the UI creation. It handles the UI developers to operate on the appearance, behaviour and the performance of the application just the way they would like it in case of the native.

3. Programming Language

Flutter: Flutter is one of those Cross-platform App Development framework that manage to use Dart programming language which was introduced by Google in the year 2011. It is one of those languages that is rarely used by developers. Dart syntax is reliable and really easy to learn and understand for the people that are well versed with JavaScript or Java. This is because it manages to supports most of the object-oriented elements. It’s accessible to start with Dart as there is massive follow documentation available on the official website of Dart.

Kotlin:  This is the type of platform which is general-purpose and statically-typed programming language. It is developed to interoperate completely with Java. It’s same as the Java and targets  JavaScript, Native and JVM (Java Virtual Machine)

4. Pricing

Flutter: Both flutter, as well as a dart, are open source and free to use language platforms. This helps in empowering the developers to view the documentation, post the queries in the open development forum and eventually learn and implement the code.

Kotlin: When it comes to Kotlin programming language, it is also considered as a free of cost and open-source code that is available on the GitHub. The user can easily download it and install it for the use.

5. Testing Support

Testing Support

Flutter: Flutter tends to provide the user with a rich set of testing feature that tests the app of the unit, widget and integration level. Flutter has great documentation on testing on the flutter apps. It tends to have an interesting widget testing feature where the user is allowed to construct widget tests to examine the UI and operate them at the speed of the unit tests.

Kotlin: When it proceeds down to consider backend development services, the platform again has the advantage over the ones that are there in the market.

While Flutter operates with Firebase, which is an efficient BaaS (Backend-as-a-Service) platform, to secure sufficient backend opportunities, Kotlin multiplatform allows developers to compose the backend code.

6. Integration

Flutter: Flutter tends to provide the user with the functionality of the building the app with both Android as well as iOS platform with fewer cost, time and also the efforts. This enables the flutter to make a perfect option for MVP development and creating a prototype that is used for testing water or raised fundings.

Kotlin: Kotlin is the framework that tends to provide the user with multiplatform which performs within the native ecosystem rather than constructing one. So, all the app experts can operate with the same tools and libraries they have been utilizing during the native development, involving Jetpack Compose and SwiftUI.

This usually means that they require third-party libraries and the tools to bridge a combination with the native environment. However, it is needs Flutter cross-platform SDK, which is presented basically at the UI development tool.

7. Minimum Supported Platforms

Minimum Supported Platforms

Flutter: The platform tends to support Android Jelly Bean, v16, 4.1.x+ versions and iOS 8+

Kotlin: The apps that are built on Kotlin can operate on any of the older Android versions with no problems in iOS 8+ versions.

8. Community

Flutter: As we all know that flutter is a new platform that is flourishing and coming into the market, the community is that one factor which is developing as well. It does not have a big market or community as it is still coming into the scenario. But as it is created by Google it tends to showcase that they are planning to make it a big thing in the mobile world. Though working with flutter is easy and using it has to be fun.

Kotlin: It is observed that Google itself is developing to become kotlin-oriented and thus the Cross-platform App Developer are moving towards it. Not only this but many of the java apps are being rewritten in kotlin written with its fast and smooth feature, and thus the market is ever-growing. Kotlin is viewed as the future of app building and development.

Difference Between Kotlin And Flutter: What have we Learned?

Features Flutter Kotlin
Performance The speed of the apps is outstanding.Performs faster and is better in security, syntax, and compatibility.
Language Uses Dart Uses Java and targets JVM, JavaScript, and Native.
UI Experience Provides with one of the best User Interface.Allows users to construct native apps and it is 100% interoperable in Java.
Pricing Open Source Open Source
Testing Support Provides a rich set of testing feature.Flutter operates with Firebase, which is an efficient Baas platform.
IntegrationWith both Android as well as iOS platformProvide the user with multiplatform within the native ecosystem
Minimum Supported PlatformSupport Android Jelly Bean, v16, 4.1.x+ versions and iOS 8+Operates on any of the older Android versions
CommunityLess Community as it is newGood support of the community


For the development of both the natives as well as cross-platform mobile application both these platforms are known to be reliable and aim at decreasing the time and expense of the app development alongside improved app performance. No matter if you are an Android App Development Company or an iOS development organization both these platforms are unique in their own way and can be used for the development purpose.

If the user has any doubts regarding the following topic they can write to us on the comment section below. Our experts and professionals would try to solve them as early as possible.

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