Understanding the glance interface guidelines
When designing apps for Apple Watch, these need to be designed differently than how you would go about designing apps for phones or tablets as they contain a different user experience.
It is extremely important to keep in mind and follow the Apple Watch interface guidelines documentation that Apple provides. This document describes guidelines and principles that help you design consistent user interfaces and experiences for your Watch apps as well as ensure that your applications run efficiently within the Apple Watch platform. You need to consider the screen sizes for your custom layouts as well as the ease of use your app brings to the platform.
Other areas are covered to ensure the consistency of your application while navigating from screen to screen as well as the principles of designing good user interfaces. There is also information related to the proper use and appearance of views and controls for navigation, alerts, notifications, table...