iOS development refers to the creation of mobile applications for Apples operating system. It involves using Apples software development kit (SDK) and programming languages such as Swift and ObjectiveC to design develop test and publish applications for devices like iPhone iPad and iPod Touch.
The iOS SDK includes an array of tools libraries and interfaces that are used to write applications. It also offers features like touch input push notifications and integration with iCloud Siri and other Apple services.
iOS developers typically use Xcode Apples integrated development environment (IDE) for building their apps. Xcode provides a suite of tools for developing software for iOS as well as macOS watchOS and tvOS.
In addition to programming and using the SDK iOS development also often involves user interface (UI) and user experience (UX) design ensuring that apps are userfriendly intuitive and attractive.
Once an app is ready it can be published to the App Store where its available for download by users around the world. However before an app is published it must be approved by Apple which has strict guidelines for app quality and functionality.