# Watch Apps: One Codebase, Two Real Applications

DevFeed: [Watch Apps: One Codebase, Two Real Applications](<https://devfeed.tech/articles/watch-apps-one-codebase-two-real-applications-19666.md>)

Original publisher: [Read original article](<https://www.codenameone.com/blog/watch-apps-phone-channel/>)

Author: Shai Almog

Published: 2026-08-22T00:00:00Z

Content type: tutorial

Language: en

Sources: [CodeName One](<https://devfeed.tech/sources/codename-one.md>)

Topics: [SwiftUI](<https://devfeed.tech/topics/swiftui.md>), [Android](<https://devfeed.tech/topics/android.md>), [media3](<https://devfeed.tech/topics/media3.md>), [SQLite](<https://devfeed.tech/topics/sqlite.md>), [API](<https://devfeed.tech/topics/api.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [api](<https://devfeed.tech/tags/api.md>), [apk](<https://devfeed.tech/tags/apk.md>), [apple](<https://devfeed.tech/tags/apple.md>), [apple-watch](<https://devfeed.tech/tags/apple-watch.md>), [asynchronous](<https://devfeed.tech/tags/asynchronous.md>), [files](<https://devfeed.tech/tags/files.md>), [release](<https://devfeed.tech/tags/release.md>), [sqlite](<https://devfeed.tech/tags/sqlite.md>), [state](<https://devfeed.tech/tags/state.md>), [swiftui](<https://devfeed.tech/tags/swiftui.md>), [watchos](<https://devfeed.tech/tags/watchos.md>)

## AI overview

Codename One can build Apple Watch companion applications and Wear OS applications from a shared watch entry point. The article explains separate application runtimes and storage, platform-specific rendering, and asynchronous communication for live messages, replicated state, and file transfers.

## Source excerpt

Codename One now builds Apple Watch companions and standalone Wear OS products from one watch entry point, with a portable asynchronous API for messages, state, and files.