Developers working on wearable apps need to consider the constraints and opportunities presented by the smaller form factor and limited hardware resources of wearable devices. They often utilize development frameworks and platforms provided by the wearable device manufacturers, such as watchOS for Apple Watch, Wear OS for Android-based smartwatches, and proprietary SDKs for other wearable platforms.

Wearable apps can serve a variety of purposes, including health and fitness tracking, notifications and alerts, productivity tools, navigation and location-based services, communication, and entertainment. They often integrate with sensors and biometric data to provide real-time insights and feedback to users.