Getting Started with HarmonyOS Wearable App Development - HUAWEI Developers

HarmonyOS features a distributed architecture for all scenarios. Develop once, and your app works seamlessly across devices—delivering a unified experience on phones, tablets, watches, and more.

Wearables are wrist-worn companions that enable communication and seamless interaction with mobile devices. Today's wearables include smart and lite devices, designed for everyday assistance, health monitoring, fitness tracking, and more.

With HarmonyOS features and wearable capabilities, you can build apps tailored for wearables—complementing larger-screen devices and delivering immersive cross-device experiences through touch, smart gestures, and more. Let's explore the key features.

Apps run seamlessly across paired devices. For example, starting eSIM activation on a watch instantly opens the corresponding UI on the paired phone.

The crown is a signature interaction on wearables, supporting both press and rotation. Rotating the crown triggers real-time responses. For example, turning the upper crown can scroll, zoom, and adjust data within the app UI.

Smart gestures offer a unique way to interact with wearables. In one-handed scenarios, users can tap with fingers or slide with knuckles to control and switch options, like effortlessly skipping to the next song in a media player.

Download DevEco Studio.

Learn how to use DevEco Studio.

Learn ArkTS: Master syntax, coding standards, and advanced techniques to build apps with ease.

ArkTS API reference: Access a complete API library to easily locate and leverage system services and components, accelerating your development process.

Get to know ArkUI: The ArkUI framework introduces two development paradigms, tailored to different app scenarios and technical backgrounds.

ArkUI API reference: A comprehensive guide to API usage, helping you fully understand and effectively apply ArkUI in app development.

Development guide: Gain essential insights into the framework, UI construction, and more.

API documentation: Explore API references to fully understand components and accelerate lite wearable app creation.

Wearable design overview: Learn design specifications and system features for wearable apps.

App architecture and navigation design: Follow system guidelines.

Interaction design: Design interaction features that follow universal principles and respond instantly, ensuring standardized operations.

Spacing parameters: Refer to common element spacing definitions to create an app UI for watch-face scenarios.

Layered architecture design: The layered architecture of HarmonyOS apps is based on a unified codebase, supporting one-time development for multi-device deployment across scenarios. For wearables, a well-designed architecture ensures system scalability, maintainability, and testability.

Modular design: In HarmonyOS app development, modularization is both a design principle and a practical approach. Apps are divided into functional modules, each dedicated to specific features. These modules can be developed, compiled, and deployed independently, while flexibly combined and used across devices.

Wearable app development: Understand the unique characteristics of smart and lite wearables, and gain insights into screen specifications and experience standards. This enables your apps to deliver more tailored functionality and interaction.

• Wearables
• Lite wearables

Privacy protection: Privacy is a basic user right, and HarmonyOS is committed to safeguarding it. Understand key principles and practices, and apply best-practice measures to build user trust and protect both users and enterprises.

App data security: Security is critical to app success. HarmonyOS delivers protection at three levels—the system, DevEco Studio tools, and app ecosystem. Understanding data risk classification and applying graded encryption help your apps meet ecosystem requirements for sensitive data storage and user privacy protection.

Test and debug: DevEco Studio offers powerful debugging for HarmonyOS apps. With real devices, the Simulator, and previewers, you can test efficiently.

• Running a lite wearable app via the Simulator

Performance and power consumption: Performance optimization spans the entire HarmonyOS app lifecycle. DevEco Studio integrates four key tools to help you detect and analyze performance issues at every stage of development.

App release: Follow the release guidelines to prepare and configure essentials, helping your apps reach users faster.

App review guidelines: Learn about app review policies to streamline approval and provide users with reliable, trusted apps.

HUAWEI Developers Training: Learn, practice, certify, and grow into a HarmonyOS professional with a complete training journey.

Codelabs: Step-by-step tutorials based on real scenarios help you master HarmonyOS development through hands-on practice.

Documentation: Explore the latest HarmonyOS documentation, from release notes and guides to API references, best practices, and FAQs.