WordBit Coreano is a free Android app from WordBit Lockscreen Study that allows users to learn Korean from their lock screen. With an average of 100 phone unlocks and 50 phone checks per day, users can use this time to learn new Korean vocabulary and phrases. The app offers over 10,000 phrases and expressions, including colloquial expressions, romantic phrases, and business phrases. The vocabulary is divided into different levels, from beginners to advanced, and is accompanied by images and audio to facilitate memorization and correct pronunciation. The app also offers fun learning modes, including flashcards, slides, and quizzes. Users can customize their learning experience by using the favorites option, deleting already learned words, and keeping track of wrong answers.