A free app for Android, by shotgun.experiments.

As the world’s largest language, Chinese is an essential language for us to live and our daily life. However, because of its enormous and complex language system, learning Chinese can be quite daunting and frustrating for someone who has never learned a language before. But don’t worry, HSK Locker is here to help you.

HSK Locker is a free, intelligent quiz and flashcard app that is designed to help you build up your Chinese vocabulary. With it, you can learn Chinese from scratch in an organized way.

This app is based on the official Chinese HSK (Hanyu Shuiping Kaoshi) examination. It includes all the characters from HSK level 1 to level 6.