Based on the official China's HSK (Hanyu Shuiping Kaoshi) examination and covering all of the nearly 5,000 Chinese characters from HSK level 1 to level 6, HSK Locker is a free, intelligent quiz and flash card app designed to progressively build up your Chinese vocabulary at your own pace.
The app starts with only characters from HSK level 1 whether for flashcard or quiz. As the user gain familiarity of the existing characters, the app will adjust the word list to gradually include characters from subsequent HSK levels, i.e. one by one, from level 2 to level 6. The learning/relearning of new words are relayed and supported via informative flashcards depending on the user's preference.
Word recognition is reinforced through repeated exposure and testing, increasing or decreasing access depending on the outcome of the quiz for each of the individual characters.