A free app for Android, by AngraSoft.

This application was developed to help you study for the Test of Proficiency in Korean (TOPIK). It provides a lot of learning material, such as the complete list of the TOPIK exam questions, answers, and explanations for each question. You can study for the test by using this app. It also includes a lot of learning material that you can use to improve your Korean. 

It has been designed to be used by learners who want to pass the test. It simulates the test and contains previous TOPIK exams. This is a perfect application to help you study and learn. It has a simple layout and easy-to-use interface.