Popular Cross-Platform Tools for App Development in 2021


In this digital world, if any business wants to grow in the market. It must have a mobile app as it is one of the handiest and accessible sources of information, among others. Whether you are an established brand or an SME or startup, mobile apps increase your chances to get accessed more frequently if a user has your mobile app in his smartphone.

Therefore there is a massive demand for mobile apps in the market and thanks to advanced technologies and tools; mobile app development companies can offer a variety of app development services to the needy ones. One out of them is cross platform app development that is highly preferable among other app development tools. And the reason behind is its ability to develop mobile apps compatible working with more than one operating system like Android, iOS & Windows. It results in saving lots of time and resources that can be utilized in other important tasks.

Here in this blog, we will discuss 11 most popular cross-platform tools that support app development and will be in trend in 2021. So let’s start with

React Native:

React Native is a highly preferred framework from mobile app developers across the world. It facilitates the development of native apps using JavaScript as its programming language. The framework works on a “write once, runs everywhere” approach that results in saving lots of time and money. Other than this, the framework’s capabilities, like image editing and video processing, make it more preferable among other API frameworks.

Facebook and Instagram are the two most famous examples of applications built using React Native. And you are aware of the usability of both these apps across the world. So, you can trust in React Native for your next app development project.


Flutter is an open-source software development kit (SDK) that allows the development of high-performance mobile apps for different operating systems like Android, iOS and Windows using a single codebase. It is a product from Google that made its presence in the market back in May 2017. Flutter app development uses Dart as its scripting language. It is easy to learn and can easily be understood by the Java developers and those who have worked on JavaScript.

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Google Ads and Alibaba are one of the most famous examples of applications built using Flutter. Flutter uses widgets for the creation of app UI, and that makes it possible to offer a fantastic look to an app. Also, the developers get benefits with different widget features like icons, fonts, navigation, scrolling and others to give applications a native-like performance.


Ionic is an HTML5 based software development kit (SDK) that allows the development of native-like apps using advanced technologies like HTML, CSS and JavaScript. The framework offers pre-designed components, interactive paradigms, typography and superb themes that enables the creation of visually appealing applications. Other than this, this popular cross-platform framework comes with APIs like Virtual DOM, TypeScript, JSX, and async that supports the development of PWAs more effectively. ChefSteps, Pacifica, Nationwide, etc. are some of the noted global applications constructed using Ionic framework.


Xamarin is one of the most preferred cross-platform app development frameworks as the platform facilitates the development of applications compatible with multiple different devices like mobile, desktop and tablets. Also, it makes developers build applications for both Android and iOS in a rapid succession time. For app development, Xamarian supports C# and F# programming languages with the Razor template engine. And the provided native friendly interface enables developers creating clients’ specific requirements. All-in-all, Xamarian is a one-stop solution that uses HTML tools to support the requirements of developers and end-users.


Sencha’s ExtJS offers functionality similar to React Native. However, the factor that differentiates both is the ExtJS framework’s usability for development. In terms of offerings, Sencha provides a visual application builder for HTML5 and allows the use of custom components. In addition to this, there is a native application package manager that handles app distribution to the App Store and Google Play.

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Sencha utilizes HTML5 for app development; therefore, you can run and test your application on both the browsers and mobile apps. Other than this, the framework allows app development in association with distinct cross-platform frameworks like AdobeGap for highly functional apps.


Corona is another best tool among popular cross-platform app development solutions. It allows the development of game apps along with mobile apps compatible with different devices like smartphones, desktop and others using a single codebase. This tool makes the app development so easier as you can create code faster, make changes and save those changes rapidly and see instant results on real devices.

Other than this, the apps built using Corona are high-in performance at every level. And the reason behind the rollout of such high-performance apps is the framework’s lightweight scripting language, Lua.

Unity 3D:

Unity 3D is a cross-platform app development tool that is best for creating applications with outstanding graphics. In terms of usability, it is relatively more straightforward and allows using the framework for more than just app development.

Moreover, Unity 3D provides the facility of exporting games and apps on 17 different platforms including Android, iOS, Windows, PlayStation, Xbox, Web, Linux and Wii. Even you can track user-analytics and perform app sharing on social networks through the Unity 3D tool.


5App is a tool dedicated to benefiting businesses involved in learning, HR consulting, and firms that offer services like resource management and delivering it to the right people at the right time.

5App uses HTML5 and JavaScript as its programming languages, and the tool’s primary focus is providing security to app data. Other than this, using this tool, one can create relevant content to support employees’ learning and performance.

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Qt manages to take place in this list of popular cross-platform tools for app development in 2021, due to its outstanding features that allow the creation of UIs, fluid, and applications that are compatible with different operating systems like Android, iOS and Windows.

Also, the tool allows making changes to the existing application for performance improvement, and you can check your app performance on different platforms using this tool.


Appcelerator is a cross-platform mobile app development tool that allows the development of mobile apps in a faster way by simplifying the whole process. It uses JavaScript as its programming language and lets the development of apps for multiple platforms and operating systems using a single codebase.

With Appcelerator, one can check the usability and performance of the app project through several automated mobile tests. Even you can improve your app performance by fixing existing bugs and crashes.

Also, you get a chance to access Hyperloop, one of the most popular APIs for multi-platform application development.

Kony Mobile Platform:

Kony Mobile Platform comes packed with all the necessary functionalities that allow the development of universal apps. It includes channel-specific APIs, third-party libraries using FFI (Foreign Function Interface), etc., among others.

Whereas with the Kony Visualizer designers and developers become able to offer a variety of services on different devices such as smartphones, tablets, desktops on distinct operating systems (Android, iOS, Window, etc.). Thanks to the multi-channel JS API framework that powers the app frontend.


These are the cross-platform app development tools which are highly popular in the mobile app industry. You can choose any of these considering your project requirements. These tools enable the creation of visually attractive, native-like apps that are compatible with particular devices and operating systems. Hope this blog will end your search for the best cross-platform app development tools in the market.

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