Leedovoca is an English vocabulary app that allows users to learn unlimitedly from more than 7,000 books. The app provides a word learning service that extracts core words from popular series such as Usborne, Roald Dahl, Nate the Great, Arthur, Disney, and more. The words are sorted in the order that they appear in the book, making it easier for users to learn them. In addition, the app has won several awards, including the Minister of Industry, Trade and Resources Award inThe app's vocabulary learning method is designed to help users learn the concepts of English words through photos or graphics, without the intervention of Korean. The app has essential access permissions for the microphone and storage to record and replay the user's pronunciation.