iOS is a mobile operating system developed by Apple Inc. specifically for its hardware. It is the software that powers Apple’s iPhone, iPad, and iPod Touch devices. Since its initial release in 2007, iOS has undergone numerous updates and enhancements, with each version bringing new features and capabilities. This operating system is known for its user-friendly interface, security features, and tight integration with other Apple services and products. In this article, we will discuss what iOS is based on and its key features and functions.

The Evolution of iOS

The Birth of iOS

The first iPhone was released in 2007, and it was accompanied by the iPhone OS. This operating system was later renamed iOS, and it was designed to run on Apple’s mobile devices. The initial version of iOS had limited features, but it was a significant milestone in the evolution of mobile devices.

The Development of iOS

Since the launch of the first iOS, Apple has continued to improve and upgrade the operating system. Each new version of iOS brings new features and improvements that enhance the user experience. From iOS 2 to iOS 14.5, the operating system has undergone significant changes that have made it more advanced and sophisticated.

The Core Components of iOS

One key takeaway from this text is that iOS has evolved significantly since its initial release in 2007, with each new version bringing new features and improvements to enhance the user experience. Additionally, iOS development involves the use of several programming languages, including Objective-C, Swift, and C++.

The Kernel

The kernel is the core component of the iOS operating system. It is responsible for managing the system’s resources, including memory, input/output, and processing power. The kernel also provides security features that protect the system from malware and other security threats.



Frameworks are collections of software libraries that developers can use to build applications. iOS includes several frameworks that provide developers with access to system-level functionality. These frameworks include the UIKit, MapKit, and Core Location frameworks.

User Interface

The user interface is the part of iOS that users interact with. It includes the home screen, the lock screen, and the various applications that come pre-installed on the device. The user interface is designed to be intuitive and easy to use, even for users who are not tech-savvy.

The Programming Languages Used in iOS Development

To build applications for iOS, developers can use several programming languages, including Objective-C, Swift, and C++.


Objective-C is the primary programming language used to develop iOS applications. It is an object-oriented language that is a superset of the C programming language. Objective-C was the only programming language supported by Apple’s development tools until the introduction of Swift.


Swift is a modern programming language that was introduced by Apple in 2014. It is designed to be faster, safer, and more efficient than Objective-C. Swift is also easier to read and write than Objective-C, which makes it a popular choice among developers.


C++ is a general-purpose programming language that can be used to develop iOS applications. It is a high-performance language that is well-suited for developing applications that require high performance and low-level access to the system.

FAQs – What is iOS Based On?

What is iOS and what does it do?

iOS is Apple’s mobile operating system, used primarily on iPhones, iPads, and iPod Touch devices. It provides a platform for running mobile apps and customizes the user interface to accommodate activities such as browsing the web, communicating, and using apps to accomplish different tasks. It is designed to be simple and user-friendly for those who are new to smartphones and technology.

What is iOS based on?

iOS is based on the Unix-like operating system known as Darwin, which in turn was built on top of the 4.3BSD-Lite kernel. This particular kernel has its roots in the Unix operating system, which was first introduced in 1970, and has proven to be robust, widely adopted, and efficient. Apple has modified and extended this base layer with its own frameworks, libraries, and APIs, which together are known as the Cocoa Touch system.

What distinguishes iOS from other operating systems?

One of iOS’s defining characteristics is its closed ecosystem, which grants Apple almost complete control over the software and hardware used on its devices. This allows them to maintain tight quality control, enforce strict security protocols, and offer more consistent experiences to the end-users. Additionally, the company’s integration of hardware and software allows for greater performance and efficiency, and the user interface is designed for ease of use.

What versions of iOS are currently available?

As of August 2021, the current versions of iOS are iOS 14.7.1 and iOS 15, the latter of which is currently in beta testing. Apple typically releases a new version of iOS each year, which brings new features, system improvements, and security updates. Some older devices may not be able to run the latest versions of iOS, so it’s important to check compatibility before performing any system updates.

Can I modify iOS to suit my needs?

While iOS is a closed system, users can customize some settings and features, install apps and games from the App Store or third-party sources, and use third-party keyboards or extensions. However, doing so may violate Apple’s terms and conditions, compromise security, or cause stability issues. Jailbreaking, which is a process of bypassing Apple’s restrictions to gain access to the root level of the operating system, is not recommended as it will void your warranty and can expose your device to malware and other security risks.

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