Start with a public-domain classic, or bring your own English book (Pro). Readii splits every chapter into three-minute episodes and turns them into a multi-voice audio drama — each word lit as it's read aloud. Tap any word for what it means in that sentence, not a dictionary entry. Idioms and cultural references explained the moment you hit them. Subtitles in six languages. The original text is never altered; every aid lives in an overlay. No streaks. First two chapters free, no signup.