30초영어캠프 is a free app developed by Insightfactory for Android devices. As an education and reference app, it offers five listening practice methods, ranging from basic to advanced, to help users improve their listening skills. The app has recently undergone a significant update that includes a new Real Search feature, which allows users to easily and quickly search through 800 videos and 10,000 lines of dialogue. The user interface has also been completely overhauled with new features, including Reflex, Real Touch, and Real Book.

One of the new features added in the update is the CelebQuiz, which provides users with a fun and engaging way to learn English. Additionally, the app now includes MiniApps, which allows users to practice specific listening skills. The app has gained a strong following with over 880,000 fans on social media platforms such as Facebook, KakaoStory, KakaoTalk, YouTube, and Instagram. If you have any questions or concerns about the app, you can reach out to the developer through their website's Q&A page.