In one lesson, you’ll get the same sentences but the questions are different. I’m familiar with the structure of the lessons as it’s the same as all the other languages, so the repetitiveness of the sentences is not surprising.However, if you get 3 wrong answers (represented by 3 hearts), then you can’t pass the test. There are also shortcuts that you can use to skip ahead if you think the lessons in between each checkpoint are too easy. For example, if you already know hangul (Korean alphabet), then it’ll skip all those lessons. As with every language, there’s a placement test in the beginning to put you roughly in the right spot to start learning/practicing.

Here are some descriptions about the features as well as some of my thoughts on the app:

I’ve used this free application before to review the French that I had forgotten since high school and I find it very useful.

Recently, learning Korean became available on the Duolingo app! I’m so excited about it and have already begun reviewing.

Duolingo hangul