"Let's study the famous Korean proverb 100 days hard!"

"The ability to review the wrong problem again"
If you click the wrong button, you can solve the wrong problem again.

"Powerful search function"
If you enter 2 or more characters, the search is performed immediately.


"The history of my study is saved as statistical data."
The number of studies, scores, etc. are displayed as statistics.


"Proverb commentary"
As soon as it is included in the number of times I have met or studied, you can see the commentary immediately.