Clock (Apple)

Clock is a timekeeping mobile app available since the initial launch of the iPhone and iPhone OS 1 in 2007, with a version later released for iPads with iOS 6 (however could unofficially be installed before), and Macs with the release of macOS Ventura. The app consists of a world clock, alarm, stopwatch, and timer. On watchOS, each function of the clock is split into four separate applications and in some cases offer additional or enhanced features. As a primary feature of the Apple Watch, a variety of customisable watch faces in both digital and analog formats are available for users to choose, which acts similar to the lock screen of an iPhone or iPad. The app icon shows the device's current time when viewed from the home screen, making it one of the only iOS apps with a dynamic icon (the other being Calendar). The World Clock allows users to access the current time of different cities of their choosing from around the world. More locations can be added by tapping the plus icon at the top of the screen, or removed by swiping left on a location and clicking the delete button. On all versions except iOS, the world clock will also display the sunrise and sunset time for each location, as well as a map which displays where it is currently night and day. Alarms allow users to create new alarms, turn existing alarms on or off, or delete them. Alarms will play a chime and vibration once completed, which the user can choose from their music or ringtone libraries, and can be set to repeat on particular days of the week.