This application was developed with the goal of helping learners of English and Korean improve their language skills. It has a large number of common words and phrases that can be used in daily conversations. It also has different categories that can be used for more specific purposes, such as business, technology, and science. It is a dictionary that works offline, so it does not need to connect to the Internet to work. It also has a history and favorite function, so you can save words you want to learn and add them to your favorites list. It also has a search function that you can use to find words or phrases. It is a free application, and it does not have any ads or in-app purchases.