When you go to the progress statistics (by clicking/pressing on the little bar chart icon in the top right hand corner) and go to the vocabulary tab, it displays a nice graph of how many words you've learned so far and the percentage of the language you should be able to understand.
Underneath that, it has a paragraph that explains the graph, written in your studied language. It handily highlights words you know by now.
However, for me it highlights words I've not been shown before? So seems to be something wrong with it, or I've not understood how it works.
Further, whenever I face a new word for the first time, I'm still asked to enter its translation from English even though I've never seen it before. How am I supposed to be tested on a word I've never been shown? I have to click reveal every time a new word comes up, so I can learn its translation for the first time. Is this how it's supposed to be, or is there supposed to be a feature where the software tells you the definition, the first time it shows you a word?