You can learn and memorize words by listening to their pronunciation and seeing their meaning in the context of example sentences and previous questions. This app allows you to do that with English, US/Australian, and Korean pronunciation. It also gives you the vocabulary with a translation, an example sentence, and a previous question.

You can set the vocabulary learning frequency to as many times as you want. It is also possible to set up to four times a day to review the vocabulary that you have learned. You can listen to each pronunciation as an MP3 file and download it to your phone.