noun
look and feel
Computing term for the visual design and interactive behavior of a user interface.
このアプリのルック＆フィールはとても洗練されている。
The look and feel of this app is very polished.
UX is broader, encompassing the overall user experience, whereas ルック＆フィール focuses on visual and interactive design.
Loanword from English 'look and feel', used in computing.