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WatchOS (stylized by Apple as watchOS) is the operating system of the Apple Watch, developed by Apple Inc. It is based on the iOS operating system and has many features similar to those of iOS.〔(【引用サイトリンク】title=Apple Watch runs 'most' of iOS 8.2, may use A5-equivalent processor )〕 It was first released on April 24, 2015, alongside the Apple Watch. The Apple Watch is currently the only device that runs WatchOS. The API is called ''WatchKit''. At WWDC 2015, WatchOS 2 was previewed publicly for the first time. It included major improvements such as support for native third-party apps,.〔(【引用サイトリンク】title=Apple announces watchOS 2 with third-party Apple Watch apps, new Timepieces, video playback, much more )〕 It was originally scheduled to be released on September 16, 2015, but was delayed due to a bug fix taking longer than expected.〔(【引用サイトリンク】title=Apple Delays Release Of watchOS 2 Due To Bug )〕 It was officially released on September 21, 2015.〔 ==UI overview== The home screen (rendered by and also known as "Carousel")〔 is composed of circular application icons, which can be zoomed in and out with the Digital Crown. Glances provide fast access to a summarized view of the most popular native or third party applications used on Apple Watch. The glance view is opened with a swipe up gesture from the watch face screen. Navigation between widgets is achieved by swiping left or right. Different actions are executed depending on the force with which the user executes a tap, which Watch detects with a special mechanism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「WatchOS」の詳細全文を読む スポンサード リンク
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