Hey English: Hãy nói tiếng Anh is an Android application developed by Teach Service Co.Ltd. It is a free educational and reference program that offers a community for English language learners to practice speaking English. Users can join free group exchanges, engage in English conversations, learn grammar and vocabulary based on various topics, make friends, and chat in English with like-minded individuals of different proficiency levels. The app also provides opportunities to participate in private, private free, and public classes to practice speaking with teachers and native speakers.

To fully experience all the features of Hey English, users must be 16 years or older. The age restriction aims to create a healthy and diverse English language learning environment with a wide range of conversation topics.