An application known asAddress Book was included with Mac OS X from its release in 2001 and in precedingbeta versions.[1] Address Book was rewritten forMac OS X Jaguar (2002) and as of 2020 has remained in roughly the same form ever since.[2][1]
TheiPhone also included contacts storage from its release,[3][4] which starting fromiPhone OS 2 (2008) was also broken out into a standalone application.[5] In 2010, theiPad withiOS 3.2 introduced a new two-pane contacts app, featuring theskeuomorphic design style popular with Apple around this time under the leadership ofScott Forstall.[6][7][8][9]
OS X Lion (2011) featured a redesigned Address Book application in the style of the iPad Contacts app, also in a two-pane design.[10] In 2012 withOS X Mountain Lion it returned to a three-pane design and changed names to match iOS.[11]
The following year, both versions of Contacts switched with their parent operating systems to a moreflat design style, a change attributed to Forstall's departure from Apple in the autumn of 2012.[12][9] In 2013 iOS Contacts switched to the new UI along with the whole ofiOS 7, while withOS X Mavericks the skeuomorphic design was removed leaving a basic UI.[12][13] WithOS X Yosemite (2014) the OS X Contacts app switched along with the rest of the operating system to the iOS 7-style UI.[14]
Contacts has two viewing modes: View Card and Column and View Card Only. The user can switch between modes with a control in the upper-left portion of the window under the close box.
In releases prior to Lion, in View Card and Column, the Contacts window is divided into three panes. The first pane has the title Group. This pane lists All, Directories, and each user-made group. Users can add new groups by pulling the File menu down to New Group, or typing Command-Shift-N.
When selecting All or a user-made group, the second column has the title Name. It lists the names of the people with cards in that group, or all the names if the selected group is All, in alphabetical order by first or last name, depending on user preference.
The third pane has the card corresponding to the selected name. The card can include information, some of which the user can classify into customizable categories like Home and Work. Many of the fields can have duplicate entries, for example, if the person the card describes has several email addresses. The user can edit the fields by pressing the edit button below the bottom-left of the third pane. Default fields include:
Contacts can search LDAP (network) directories. Users customize these in the LDAP tab of the preferences. Users search these by selecting Directories in the first pane, selecting a directory or All in the second pane, and typing their search in the search box above the top-left of the third pane. Results appear in the third pane.
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