The document compares React Native and Swift for iOS app development, outlining their respective advantages and disadvantages, performance aspects, and architectural considerations. React Native is favored for cross-platform compatibility and native rendering, while Swift excels in performance and safety for complex applications. The final recommendations assist in choosing the appropriate framework based on specific application needs and future plans.

1. Should You Choose React Native Or Swift For
iOS App Development?

2. Table of Contents
● 1) About React Native
● 2) About Swift
● 3) The advantages and disadvantages
○ Advantages of React Native
○ Disadvantages of React Native
○ Advantages of Swift
○ Disadvantages of Swift
● 4) 1. Performance aspects
○ Performance of React Native
○ Performance of Swift
● 5) 2. The architectural aspects
● 6) 3. Building complex applications
● 7) 4. App testing
● 8) Final considerations

3. Introduction
Have you been thinking about developing a cross-platform application or a native iOS solution for your
business? How will you make the right choice regarding technology that’ll yield an interface worth
showcasing? This topic will answer these questions and more.
This write-up is primarily a comparative study of React Native and Swift – two different technologies
preferred for building iOS applications. Before getting into the thick of things, however, you and your
preferred swift app development company have to solve this riddle.
Is it possible to use Swift, as well as React Native, to build a native app for iOS?
Both frameworks are powerful enough to help developers build apps for iOS devices efficiently. Then
again, a few factors determine the language developers should use to create the application.
Without further ado, this topic will take you directly into the pool of comparison to help you
contemplate both technologies.

4. About React Native
React Native is an exceptionally renowned open-source app development framework that works on JavaScript. It mostly
focuses on rendering apps natively, which are primarily compatible with Android and iOS. The creators of React Native wrote
it by combining JavaScript and XML –Esque markup language.
1. Two years ago, about 42% of all developers were using React Native for hybrid app development.
2. About 58.5% of the entire community of developers loves using RN.
3. About 11.5% of all developers prefer using React Native because of the libraries and tools it has to offer.
About Swift
Experts describe Swift as a robust programming language with multi-paradigm abilities for building applications for Mac, iOS,
Apple TV, Apple Watch, and Linux OS. Apple created and released Swift about seven years ago and made it open-source. For
developers, Swift is simple enough to read, write, and maintain. They need to use straightforward syntax to do it.
1. Based on the report of the annual survey conducted by StackOverflow in 2020, about 59.5% of all developers enjoy
using Swift.
2. In the Tiobe index report that came out in May 2021, Swift held the 11th rank.
3. Another report from PYPL ranked Swift 10th on their list and affiliated it with a market share of 1.91%.
4. On Github, Swift enjoys 56.1k stars and 9k forks.

5. The advantages and disadvantages
How will you benefit from using iOS swift app development services or React Native development services? When will one
of these frameworks prove to be fruitless for your project? This section will explain it.
Advantages of React Native
● Rendering natively
React Native uses the host platform to render APIs natively without using CSS or HTML markup.
● Performance level
React Native converts an application’s markup to replicate the authenticity of UI elements without compromising
performance.
● Debugging
React Native offers intelligent tools for debugging and error reporting purposes.

6. Disadvantages of React Native
● UI
API native rendering of React Native may fail to support specific native elements of UI. As a result, the UI can become off-putting.
● Plugins and tools
Some of the libraries from third parties may turn out to be obsolete.
● Performance level
React Native doesn’t facilitate multi-processing and parallel threading. This drawback affects performance.
Advantages of Swift
● Ease of reading and maintenance
Swift possesses clean syntax and fewer lines of code. Naturally, it reduces the possibilities of mistakes during reading, writing, modification, and maintenance.
● Hybrid support
Swift enables hybrid support through platforms like Linux OS. It’ll also receive support from Windows soon. Furthermore, the framework has libraries and
modules accessible via other supported platforms.
● App safety
Swift boasts of a structured and robust system of typing with error-management systems. As a result, developers can find and squash bugs within a short time.

7. Disadvantages of Swift
● A new entrant
As Swift is a relatively new entrant, only a handful of developers use it. Also, the developer community needs time to
grow.
● Debugging
Swift utilizes clunky LLDB functions and services. It may not be able to debug compiler errors properly.
● Absence of Hot-Reloading
Developers can’t use the Hot-Reloading feature in Swift. That’s why they need time to make changes to the code.
1. Performance aspects
Now that you’re aware of the pros and cons of using React Native and Swift, it’s time to explore the performance
capabilities of both frameworks. It’ll help you determine whether to work with a swift app development company or
React Native development firm.
● Performance of React Native
The app development community never liked the performance of React Native. It has three elements, including a
JavaScript thread, a bridge, and a native thread. The bridge works as the mediator between the two threads.

8. ● Performance of Swift
Swift, on the other hand, can run complicated app logic and the heaviest computations surprisingly fast. There’s the LLVM
compiler that converts the code of Swift into optimized native code. As a result, developers get direct access to APIs and
device hardware components.
1. The architectural aspects
Whether you’ll go with iOS swift app development services or React Native development services depends on the
architectural aspects of the two frameworks.
● The architecture supported by React Native
React Native bridges the gap between the JavaScript thread and the Native thread. Based on this functionality, the code of
JavaScript communicates the Native API with the platform. React Native utilizes JavaScriptCore separately to make all the
codes work on iOS.
● The architecture supported by Swift
Some of the architectures used in building applications on Swift include MV, Viper, MVVM, and Clean. The architecture of
Clean has the templates of Xcode to generate the components. Developers can modify these template components
depending on future requirements.

9. 1. Building complex applications
When it’s about building a complicated application, should you hire react native app developers from Moon Technolabs? Or will you stick to Swift?
Also Read : Explore About ReactJS and React Native, Here’s Some Help
● Suitability of React Native
Indeed, it’s perfectly possible to create complicated native applications on React Native. However, you must know that your developers can do it only when you incorporate
native development with React Native.
● Suitability of Swift
Swift is an excellent choice if you want to include native features in your app or any other complicated integrations. Swift works well for apps with the most complex
infrastructure in need of features native to iOS.
2. App testing
Yes, the ability of a framework to facilitate app testing is a crucial determinant. You have to consider this particular aspect if you want your mobile solution to succeed.
● Ease of testing on React Native
React Native doesn’t receive official support for testing at the UI level. It doesn’t get any integration testing support, either. Additionally, only a few frameworks with unit
testing systems are available to developers for inspecting React Native applications.
● Ease of testing on Swift
To test apps for iOS devices, Swift utilizes Xcode. It facilitates both UI and unit testing. For unit testing, Xcode starts the app first and then runs tests. If it spots one or more
bugs, it sends a report to the developers before moving on to the subsequent test case. The UI testing process works just like unit testing, but it leverages XCUITest.

10. Final considerations
Well, there you have it – a comprehensive comparative study of the two most popular frameworks in existence for developing iOS
applications. The creators of both frameworks designed them specifically for offering the best UX on native platforms. Also, both frameworks
have exclusive advantages and disadvantages.
If the information provided above doesn’t help you in making the right decision, then you should hire react native app developers based on
the factors mentioned below.
1. You want to build an app with complicated UI and high device memory management.
2. You want to create just one platform by leveraging the ecosystem of Apple.
3. You wish to create apps with native APIs and features for iOS.
4. You hope to build something that’ll need upgrades and maintenance in the future.
5. You want to create banking solutions with extra safety and a high memory management level.
Conversely, Swift should be your choice if your idea satisfies the following conditions.
1. You want to create an app that you can release on Android later.
2. You want to reduce your app development expenses.
3. You want to create something in need of live reloading and hot reloading.
4. You want to create a cross-platform solution.
5. You want to build your app as fast as possible.
These considerations will aid you in making an informed decision. You can always contact Moon Technolabs if you wish to learn more about
the differences between React Native and Swift, as well as their abilities.