The Apple App Store is a digital application distribution platform for iOS developed and maintained by Apple Inc. The service allows users to browse and download applications that were developed with Apple’s iOS SDK. The apps can be downloaded directly to an iOS device, or onto a personal computer (Macintosh or PC) via iTunes.
Applications in the App Store are generally targeted at iOS devices, including iPhones and iPads, and may take advantage of specific attributes of those devices, such as motion sensors for game controls and cameras for online video calling. Apps may be downloaded for free or for a set cost, and they may include in-app monetization through advertising or purchases. Apple takes 30 percent of all revenue generated through apps, and 70 percent goes to the app publisher.
Apple ID is available free-of-charge and can be obtained by signing up at My Apple ID webpage. An Apple ID must be a valid email address, for example “firstname.lastname@example.org”, protected by a password that is an alphanumeric string of at least 8 characters, and case sensitive.
When a user creates a new Apple ID, Apple will send a verification email to the email address that the user provided during registration. The user is required to follow the URL(Uniform Resource Locator) that is included in the verification email to activate the account, then the user will be able to use their Apple ID. It is possible to create an Apple ID without specifying a credit card.
In March 2013, Apple ID launched an optional two-step verification security feature for authentication. When enabled, a second verification step is required when using the Apple ID under certain conditions, such as a web logon, or making a store purchase from a new device. The feature makes use of the ‘Find My iPhone’ service to send a four-digit pin code to a trusted device associated with the Apple ID when the second verification step is required for authentication.