How to Code iPhone Apps
- 1). Use a Mac computer with the Snow Leopard operating system (OS).
- 2). Download Xcode, Apple's development environment for app programming for iOS (iPhone and iPad) apps.
- 3). Program your app in the Objective-C programming language. Objective-C, used to create iPhone and iPad apps, is an object-oriented programming language. Use Cocoa as the application programming interface (API) that is used to connect to many services on the iPhone and iPad, and also allows you to use Cocoa Touch for recognizing gestures.
- 4). Test your finished app with the iPhone Simulator in the Xcode development environment. Become a member of the Apple iPhone Developer Program for $99 in order to deploy your app to devices. Test your app on devices before launching it officially.
- 5). Submit your app to the Apple App Store.
Source...