The operating system manages the device hardware and provides the technologies required to implement native apps. iOS 10 is the latest version currently in use.
The iOS Software Development Kit (SDK) contains the tools and interfaces needed to develop, install, run, and test native apps that appear on an iOS device’s Home screen.
Native apps are built using the iOS system frameworks and Objective-C or Swift language that run directly on iOS. Unlike web apps, native apps are installed physically on a device and are therefore always available to the user, even when the device is in Airplane mode. They reside next to other system apps, and both the app and any user data is synced to the user’s computer through iTunes.
The iOS SDK provides the resources need to develop native iOS apps. Primarily, Swift and Objective-C are the technologies to develop native iOS apps that runs on iPad, iPhone or on iPod touch. However, iOS apps also can be developed using hybrid app development technologies without Swift and Objective-C.
Enterprises across the world are using iOS for with native or hybrid mobile business app.