Three issues regarding your Hangeul practice:
1. When are we getting sound? When it says 'coming soon', how soon is soon?
2. Could you please alter the practice so the you don't lose what you just typed the moment you hit enter. When I make a mistake, I want to be compare the correct answer AND my incorrect answer.
3. There appears to be a mistake for one of the characters. 뮤 comes out as 'my' instead of 'myu'.