EF Hello: Learn English is an application specifically designed for English learners, offering personalized English teaching services through AI and machine learning technology. This app enables users to learn English anytime and anywhere by practicing dialogues that simulate real-life scenarios, enhancing their spoken English abilities. Background information reveals that EF Hello is developed by Signum International AG, aiming to make English learning more convenient and efficient through technological means. The app is available for free download and offers in-app purchase options, priced affordably to cater to a wide range of English learning enthusiasts.