Readip - Read books with vocab training

Hey everyone! I'm Jinsung, the maker of Readip. I built Readip because I was frustrated with traditional language learning apps. Flashcards and grammar drills felt boring I wanted to learn through actual stories. So I built an app where you can read real English and Korean books, tap any word to save it, and train your vocabulary with flashcards, quizzes, and dictation all in one place. We have 70+ books across 7 genres, organized by difficulty level (A1 to B2), so whether you're a beginner or intermediate learner, there's something for you. I'd love to hear your feedback what features would make your language learning experience better?