noun
app store; application marketplace
Refers to a digital distribution platform for software applications, typically on mobile devices or computers. The term is a direct loan from English and is used in the same way.
新しいアプリをアプリケーションストアからダウンロードした。
I downloaded a new app from the app store.
アプリケーションストアで人気のゲームを探す。
I look for popular games on the app store.