Useful, with 1 drawback

Overall it is very accurate, with many nice functions including audio and list sorting. However, there is no way to quickly turn to a specific page besides just flipping pages one by one. Troublesome if you want to quickly review a word somewhere in your list, especially so for Hsk 5 and up where the vocabulary lists are more extensive. This is an important and overlooked feature that will hopefully be fixed in future versions!

柯勇毅 about HSK Level 5 Vocab List - Study for Chinese exams with PinyinTutor.com