哈單字 is an education and reference app developed by Studio Classroom. It offers a unique way to learn and practice American English pronunciation. With this app, you no longer have to worry about mispronouncing words while learning vocabulary.

The app allows you to subscribe to different word lists based on your proficiency level or content preferences. Whether you're waiting for the bus, riding the subway, or standing in line, you can easily learn a few words in those spare moments.

For just $30 per month or a discounted rate of $60 for a 6-month subscription, you can download the subscribed word lists and access them offline. This makes it convenient to review and practice even without an internet connection.

哈單字 also lets you challenge your friends and compete in vocabulary showdowns. Each word comes with Chinese translations, example sentences, and audio pronunciation, making it highly effective for learning.

You can also save words to your favorites list for quick reference. Additionally, the app offers weekly vocabulary quizzes to test your word power and compete for rankings.

If you need any assistance, you can contact the customer service representative at Studio Classroom through email or phoneThey are more than happy to help you with any questions or concerns.