Atomic Design Is For User Interfaces
And that’s not what atomic design is trying to accomplish.
To demonstrate the fact that atomic design applies to all user interfaces, I atomize the UI of a native mobile app:
(Quick aside: I know Instagram’s feed is a WebView inside a native shell, so technically CSS and JS are involved in creating this UI. But shhhh.)
You can read a breakdown of each stage over at the book’s website if you want to better understand what’s going on in each stage.