YOU SAID:

How does this work? Why did it add “app”? And, why didn’t it that time?

INTO JAPANESE

これはどのように作動しますか？なぜ「アプリ」が追加されたのでしょうか？そして、なぜあの時はそうしなかったのでしょうか？

BACK INTO ENGLISH

How does this work? Why was "app" added? And why didn't you do it then?

INTO JAPANESE

これはどのように作動しますか？なぜ「アプリ」が追加されたのですか？そして、なぜその時そうしなかったのですか？

BACK INTO ENGLISH

How does this work? Why was "app" added? And why didn't you do it then?