RainbowSay listens along with your favorite series, videos and podcasts. It pauses at the end of each sentence and shows you what was just said — translation, vocabulary, grammar. Real voices, real pace, one sentence at a time.

Animated demo of a Listening session. A Korean drama plays in a video player while the app’s overlay transcribes a line of dialogue: “있잖아, 행복은 가끔 그냥 햇살 아래 커피 한 잔이야.” At the end of the sentence the app pauses the video and shows a card with the translation — “You know, happiness is sometimes just a cup of coffee in the sun.” — a vocabulary list with romanized readings (있잖아, itjana, you know; 행복, haengbok, happiness; 가끔, gakkeum, sometimes; 그냥, geunyang, just; 햇살 아래, haetsal arae, in the sunshine; 커피 한 잔, keopi han jan, a cup of coffee) and a grammar note on the casual ending 이야. The original is replayed with a word-by-word highlight, the question “Why 행복은 and not 행복이?” is answered in a chat panel (은/는 marks the topic), and pressing Continue resumes the video.