Across the reading area for whenever a passage is shown: it shows the 'Unknown words' amount but it would be useful (to me anyway) to also know how much of a passage I was still learning and also how many words the passage contains.
For example on this page:
I can see how many new words are in each passage but not any more detail:
- I have no idea how many words the passage contains.
- I have no idea if there are any words that I am already learning.
This information would also be useful on the "My Passages" page.
Then I could also see which passages I really need to review because I might have a high number of words I am still learning. The 'My passages' page after you have read the passage does not really give you much information at the moment in terms of how well you know the passage.
For example: I could know all the words in passage 1 and be learning all the words in passage 2 but I cannot know this without opening each passage.
Total words would also be very useful here as well.
Anyway, it's just a suggestion...