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Top 10 Benefits of Swift for iOS App Development

For a long time, Objective-C was the king of iOS app development. But in 2014, Apple introduced a new coding language, Swift – that took the realm away from Objective-C. Swift is a groundbreaking programming language that can help developers to create seamless iOS applications.

Currently, Swift has 856 contributors committed 117792 times in 324 branches with 1,772 releases on github and counting.
The best thing about Swift is that it’s open-source, smooth, stable, progressive, and ensures safe and secure coding. The language has many interactive features that make it concise, clear, and much easier to use than Objective-C.

Since its initial release, Swift has proved to be a smarter and easy coding language that builds worthy connections between iOS app developers. Here we have outlined some of the significant advantages of Swift for developing an iOS application:

1.Supports Dynamic Libraries

Just imagine uninstalling your app and then reinstalling to get the latest update. Well, hardly any individuals would make such efforts to get the update. Thus dynamic libraries were introduced in Swift to update the mobile apps effortlessly.
Dynamic libraries allow current Swift apps to connect to newer Swift language versions as they get new updates or evolves. In Swift, dynamic libraries are imported directly to the memory, reducing the mobile app’s initial size and eventually increasing app performance.

2.Backed with Interactive Playgrounds

With data visualizations, beginners can learn Swift without having an in-depth knowledge of the Swift programming language. Every mobile app developers want the interactive playground feature of testing out new code or algorithm without creating an entire app from the base again.

Playground is the feature that every app developer would adore. Apple added inline code execution to Playgrounds, which helps programmers create algorithms, run code, and get feedback instantly. This makes life simpler for iOS apps developers because they can accelerate their growth period and build seamless iOS apps.

3.Minimal coding

Swift requires lesser time to write a code while comparing it with Objective-C. Because of the data manipulation and inline text strings support, Swift becomes less prone to errors.

Swift has the option to describe the values as optional types or as types of values. For example, iOS developers can define if the value exists or is null while defining the process. So, if the developer mistakenly takes the zero optional value, the runtime crash is caused by Swift. This crash stays with the zero-pointers optional value on the code line and forces the iOS app developer to fix the bug immediately.

4.Light-Speed Development

Swift is faster than Objective-C because, with the aid of advanced software development tools that were inaccessible when C was developed, it eliminated the C language’s limitations. Swift was originally designed to run faster, as stated by Apple. It allows app developers to use common and high-order functionality that are clean and reusable.

Swift can run application logic 3.9X faster than implementing the same logic or code in Python. During the growth period, these pace benefits often help when it comes to cost. In arithmetic calculation, Swifts’ output exceeds the fastest algorithm, which C++ demonstrates.

5.Automatic memory management

Swift uses Automated Reference Counting (ARC), a technology to add a garbage collector feature that was previously not present in iOS. Programming languages such as C#, Go, and Java utilizes garbage collectors to uninstall class instances of no use. It helps to decrease your memory footprint and eventually adds up to 20% of CPU memory.

Before ARC, iOS developers had to handle memory manually and continuously manage to retain every class count. Swift’s ARC intelligently picks up instances that are no longer in use and removes them. It helps you to improve your app’s output without lagging your memory or CPU.

6.Code Readability at Ease
How pleased any developer would be if he/she were able to code in plain English. Another benefit of Swift over Objective-C is that its more expressive and much easier to understand, interpret, and write even by a non-coder. Even if someone is not familiar with coding or has zero knowledge, Swift will be much easier for them to learn. Besides, it requires fewer code lines as it eliminates legacy conventions, such as semicolons at the end of lines, use of parentheses, and much more.

Swift has simpler syntax to read and write while also offering the advantages of Objective C. Additionally, method calls do not have to sit within brackets; developers can use commas that divide lists of parameters inside parentheses.

7.Low Maintenance

Objective-C capacity to evolve was much dependent on language C. It’s the subset of language C; hence adding a new feature or enhancing it was challenging and time-consuming.

Owing to the same purpose, Apple app developers had to maintain two files to optimize build time and performance. While on the other hand, Swift combines the Objective-C header files (.h) and implementation files (.m) within a single code file (.swift).
One more drawback of Objective-C is that app developers have to synchronize method names and comment in the middle of files manually. For such cases, Swift programmers can now leverage this time to build app logic, boost their code quality, etc.

8.Safer and Secured

The primary concern of any software developer and entrepreneur is app safety and security. For any business looking to build a reliable and stable mobile iOS app for its customers, Swift is an ideal choice. As we described earlier, Swift uses syntax that is simple and easy to understand, minimizing the chances of developers making errors when writing the code.

Basically, Swift does not give you any chance of developing harmful bugs or applications that are exception-free. It is much faster and more efficient for bug testing because errors can be fixed when compiling and writing code, making it a safer and more stable programming language.


Swift was developed initially for Apple (iOS, OS X, watchOS, tvOS) platforms and has been further expanded to Linux. Its creators understood the fact that it should be available to everyone to build a remarkable modern programming language. Swift has helped to develop many frameworks & tools from third parties and has resulted in a growing community.

Swift also helps iOS developers to use multiple platforms, add new features, contribute to the open-source community by fixing bugs.

10.Cross-Platform by Nature

If you think only iPhone apps can be developed using Swift – then you are wrong. It can be used with other MacOS-to-TV (tvOS) Apple products and also smartwatches (watchOS). Apart from that, Swift integrates with most backend technologies on the server-side.
In fact, apps can be built quicker by using Swift on the backend and frontend. This is mainly due to code reuse functionality, but it is also a factor in developer time and resource availability.

Wrapping Up

For newbies, Swift is friendly and easy to understand. Writing Swift code on a playground allows iOS developers to experiment with code and instantly see the results without building and running an app overhead.

The choice of the most suitable language depends on the project’s context and the team, and the preference for a specific programming language.

If you wish to build a flawless iOS application, Swift application development is recommended. Swift takes many helpful Objective-C components while adding a whole new set of features that allow developers to write safer, more stable code.

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