TThe Hanyu Shuiping Kaoshi, (汉语水平考试), abbreviated as HSK, is the People's Republic of China's only standardized test of Standard Mandarin Chinese proficiency for non-native speakers. It is also known as the "Chinese Proficiency Test".

There are six levels for the HSK. Level 1 is Elementary. Level 2 is Elementary with Honors. Level 3 is Intermediate. Level 4 is Intermediate with Honors. Level 5 is Advanced. Level 6 is Advanced with Honors.

This app includes all the words required by the HSK from level 1 to leve 6. Level 1 has 148 words. Level 2 has 147 words. Level 3 hs 309 words. Level 4 has 583 words. Level 5 has 1230 words. Level 6 has 2499 words.

The app use flash card to help you learn all the HSK words.

The flash card uses a sophisticated algorithm to schedule the best time for a card to come up for review. Difficult cards that you tend to forget quickly will be scheduled more often.You won't waste your time on things you remember well.
This is free version. It has limited collection of cards