The Importance of App Icons
Users should be able to quickly scan the array of icons on their Apple Watch home screen and find the one they’re looking for. This makes it extra important to follow the Apple Watch Human Interface Guidelines when designing the home screen icon:
Use universal imagery that people will easily recognize
Create an abstract interpretation of your app’s main idea
The above screenshot shows the final Apple Watch icon for our Berry Quest game. Notice how the cherries really stand out and almost take over the entire icon.
Our app icon managed to stand out enough to catch the attention of Cult of Mac. From http://www.cultofmac.com/320070/10-super-adorable-apple-watch-app-icons/:
No one will mistake this app icon for anything other than an adorable matching game based on fruit, am I right? What a fun little cherry icon, perfect for tapping on my wrist and launching a fun little tappy game on my Apple Watch. I can’t wait.