"Bread is delicious."
App bug: although bread (빵) can be used with either 은 or 이, the app marks it "incorrect" when the version used doesn't match what is in the provided translation.
In other words...
In-app question 1: "translate this: 빵은 맛있습니다." = (i enter: Bread is delicious) = correct
In-app question 2: "translate this: Bread is delicious." (I enter: 빵은 맛있습니다.) = incorrect.
I tap on the word "Bread" in the question to see what the app thinks is the right answer... "빵이..."