It’s free because there’s not much to it!
Very limited. Just the names of a few dozen items. Ok in it’s way but it is hardly going to make you fluent as there is no grammar, just a smallish list of nouns. I was amused to notice that I was asked for I nickname when entering this review and I suggested “unsatisfied” but it was already taken. I then tried dissatisfied and it was attended too, not satisfied was also taken. So was not good enough! And poor!