This is the 6409th most frequent Korean word.
앱이
"앱이" is a casual or phonetic reference to "app" (application) in Korean.
Here '앱이' refers to the subject (app in this case) of the sentence.
이 앱이 정말 좋아요.
This app is really good.
In this sentence, '앱이' is used as part of the subject, emphasizing the app being referred to as specific and previously mentioned.
내가 추천한 앱이 맞나요?
Is this the app I recommended?
Here, '앱이' serves as the subject of a conditional clause, discussing the situation involving the app.