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Release record

watchOS 1.0

Full article
Public release
Recorded milestones
1
Beta cycle
—
Average interval
—
Public release
Apr 24, 2015

Release notes

Overview

Editorial synthesis with inline references and a source ledger when citations are available.

Release overview

The local catalog treats watchOS 1.0 as the launch software that accompanied the original Apple Watch on April 24, 2015. Its documented scope established wrist-first navigation, communication, health and fitness, payments, directions, glanceable information, and companion-app experiences.[1]

Evidence boundary

Apple's launch material describes Apple Watch as an integrated hardware-and-software product and does not label this baseline as a separate watchOS 1.0 download. Apple's 2015 security index begins watch software coverage with Watch OS 1.0.1 on May 19, so no security repair is inferred for the April 24 baseline.[2][3]

Source ledger

References

Sources are linked to the claims they support. Publication and access dates are shown when available.

  1. Apple Watch Available in Nine Countries on April 24

    Apple Newsroom · Apple · 2015-03-09T00:00:00.000Z · April 24 availability; feature sections

    Back to text ↑
  2. Apple Watch Available in Nine Countries on April 24

    Apple Newsroom · Apple · 2015-03-09T00:00:00.000Z · Integrated hardware and software; availability

    Back to text ↑
  3. Apple security updates (2015)

    Apple Support · Apple · 2023-11-06T00:00:00.000Z · Watch OS 1.0.1 — 19 May 2015

    Back to text ↑
  4. Apple Watch Available in Nine Countries on April 24

    Apple Newsroom · Apple · 2015-03-09T00:00:00.000Z · April 24 availability; Apple Watch feature sections

Documented & observed

Changes in this version

Source-linked features, fixes, known issues, removals, and community-observed behavior recorded across this version’s appearances and verified builds.

Release changes

Changed in this release

Features, fixes, removals, and regressions first observed in this release record.

feature · introduced

Customizable watch faces and complications

documentedconfirmed

Users could select analog, modular, or animated presentations and attach details such as calendar events, activity, or sunrise and sunset.

Recorded at Public

  1. [1] Apple Watch Available in Nine Countries on April 24 · Incredibly Accurate & Customizable Timepiece

behavior · introduced

Watch and iPhone sensor fusion

documentedconfirmed

The launch system selected between on-watch and paired-phone sensors to build movement history and personalized activity goals.

Recorded at Public

  1. [1] Apple Watch Available in Nine Countries on April 24 · Activity sensors and iPhone history

developerApi · introduced

Companion-style third-party apps

documentedconfirmed

The first app model placed core app ownership on iPhone while presenting wrist-specific interactions and an Apple Watch App Store browser in the companion app.

Recorded at Public

  1. [1] Apple Watch Available in Nine Countries on April 24 · Developer apps and Apple Watch app

feature · introduced

Force Touch controls and Taptic alerts

documentedconfirmed

Pressure-sensitive controls exposed contextual actions while the Taptic Engine provided a private physical notification channel.

Recorded at Public

  1. [1] Apple Watch Available in Nine Countries on April 24 · Force Touch and Taptic Engine

feature · introduced

Calls, messages, and email from the wrist

documentedconfirmed

Core communication functions moved to the wrist while remaining dependent on the companion iPhone relationship.

Recorded at Public

  1. [1] Apple Watch Available in Nine Countries on April 24 · Intimate & Immediate Communication Device

feature · introduced

Apple Pay, passes, and Siri directions

documentedconfirmed

The launch software connected the wrist interface to payment, travel-pass, voice-assistant, and navigation workflows, subject to service availability.

Recorded at Public

  1. [1] Apple Watch Available in Nine Countries on April 24 · Apple Pay, Passbook, Siri, and Maps

Milestones

Release history

Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.

  1. Public release

    Public

    Full articleEditorially verified

    The audited watchOS 1.0 public route records the original Apple Watch launch on April 24, 2015 and its documented navigation, communication, fitness, service, app, and compatibility baseline.

    Availability
    available
    Sources
    16 linked
    Open this appearance

Historical context

Cycle comparison

Pace, intervals, and duration compared with earlier releases on the same platform.

Historical avg for major releases

101 days, 9.8 milestones

Based on 11 previous watchOS .0 releases

Previous .0 releases (watchOS)

Previous comparable watchOS releases
VersionYearCycleMilestonesAvg. Interval
watchOS 26.0202598d1110d
watchOS 11.0202498d912d
watchOS 10.02023105d1012d
watchOS 9.0202298d912d
watchOS 8.02021105d1012d
watchOS 7.0202086d1010d

Scroll horizontally to compare every historical field.

Official release notes