A free app for Android, by AllDict.
This free Korean-Bengali Dictionary (한국어 - 벵골어 사전) contains the most important words in both languages in the most simple and easiest way. It can be used as a reference tool and learning tool for the beginner as well as for the advanced learner.
This is a dictionary with a large number of words, which makes it suitable for any level. It has the advantage that it is available offline, which is very convenient and saves you from needing an internet connection.
This dictionary has a very simple design and user interface, which makes it easy to navigate and use.
The word trainer has different exercises to help you improve your skills in both languages. It is suitable for any level.