I now meanwhile do have ca 1500 words saved and I do the tests regularly. But it’s quite tough to follow up/keep pace with the suggested words to repeat - each time I open the app the number of words is huge.
So, it would be good if the time span, when the words for each level are asked for the repetition, could be adjusted.
And/or additional intermediate levels (not only 4) would be there, with a higher time span for the last levels.. this would stretch it a bit.
Beyond this I love the App!!