Học tiếng Hàn Topik is an Android application developed by Leaning City that aims to teach users Korean language skills. It offers a variety of features such as vocabulary from popular textbooks, multiple-choice quizzes, writing exercises, and a home screen widget for learning new words.

The app is free to download and use, making it accessible to anyone interested in learning Korean. The interface is simple and easy to navigate, making it suitable for beginners. The vocabulary is organized into categories, making it easier to focus on specific topics.

Overall, Học tiếng Hàn Topik is a useful tool for those who want to learn Korean at their own pace and on their own time. The app offers a comprehensive learning experience that covers various aspects of the language, and the inclusion of a widget makes it convenient to learn new words without even opening the app.