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<div style="font: bold 2em/1.2 -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, sans-serif; color: var(--wiki-color);">watchOS 1</div>
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! class="ios-lab" | Developer
| class="ios-val" | [[Apple]]
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! class="ios-lab" | Initial release
| class="ios-val" | April 24, 2015
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! class="ios-lab" | Final release
| class="ios-val" | 1.0.1 (May 2015)
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! class="ios-lab" | Succeeded by
| class="ios-val" | [[watchOS 2]]
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{{watchOS Version Navbox}}
watchOS 1 is the first release of [[watchOS]], shipped April 24, 2015, on the original Apple Watch. Third-party "apps" were WatchKit extensions running on the paired iPhone with the watch as a remote display — an architecture chosen for battery and schedule that made launches painfully slow — while glances, actionable notifications, Digital Touch sketches, and the honeycomb home screen defined the first-year experience.
= Features =
Watch faces with complications; glances; Digital Touch; Activity rings and Workout; Apple Pay on the wrist; Siri; and phone-dependent WatchKit apps.
= Legacy =
watchOS 1 launched the wearable platform and taught its first hard lesson — remote-display apps don't work — answered within months by [[watchOS 2]]'s native runtime. The Activity rings it introduced remain Apple's most durable fitness iconography.