The multiple choice mode is missing a button for "i don't know". I figured out you can hit enter to get the same, but i don't think everyone would. E: Gave it

The multiple choice mode is missing a button for "i don't know". I figured out you can hit enter to get the same, but i don't think everyone would. E: Gave it a bit more of a try, and i won't be switching this one. The japanese set doesn't seem to particularly try to avoid throwing unknown words at me when giving me new ones and the voice is uncomfortably high-pitched.