@Nigma Hm, not quite sure. I've just started learning and apparently didn't reach this part of app yet.
At least hiragana/katakana parts work, and my simple kanji training is also good.
Though there are some issues with "writing" tests and I've seen several scaling issues on phone: sometimes romaji doesn't fit the buttons on my Samsung M53 and you just have to guess. I suppose you might have met the same issue with cut-off