I think it's good! I am Japanese, but I think that this application is done well! I think that if you remember Japanese of this application you will definitely speak with us even if you come to Japan! This may be a strange sentence because I used Google Translate ... ナイスだよ!頑張ってね!
Very handy Very handy little App especially for the newbie or traveller. Live the fact that you can slow down the speaker to get it right. Would be perfect if you could access it without having to be connected to the internet - sometimes some places you just can't get a signal...