add repetition option
after i get something write (or wrong) i'd like to hear the phrase again. especially in a language that's more distant to me like chinese. sometimes i barely get it right and would like to hear it again to remember the sounds that go with the symbols better.
I found the shortcut keys helpful, CTRL + SHIFT + SPACE to hear the phrases again, before you submit your answer. And if you mouse over each symbol, it gives you the translation before you type you answer. Sorry, you might already know that but I found it by accident and it's been really helpful for me. Hope that helps, good luck! :)