Hi Product Hunt 👋

I built RainbowSay because the way I actually wanted to learn a language was by watching the shows I already loved — and every app wanted me to stop watching and open a ai chat / dictionary instead.

RainbowSay is a Mac app that lives in your menu bar and listens to whatever your Mac is playing — a series, a YouTube video, a podcast, a lecture, even a call. When a sentence ends, it pauses the player and floats a small card over the video with the sentence, its translation, the vocabulary with readings, and a note on the grammar. Replay the original or the spoken translation word by word, ask the chat why it’s that tense, press Continue, and the story goes on.

Three ways to use it:

🎧 Listening — learn from the shows, sentence by sentence, in 57 languages.

🎙️ Speaking — hold space, say a sentence, and get it back written out, translated and glossed, with one gentle correction.

💬 Subtitles — transparent, always-on-top captions over any video or call: the original plus up to three translations at once, streaming live. Great on a classroom projector, or over your own footage and voice, with SRT export.

Every session is saved on your Mac — sentences, audio, chats, subtitle timelines — so tonight’s episode becomes tomorrow’s review.

It’s free to start: sign in and there’s starter credit waiting, no credit card. Apple Silicon Macs for now; Windows and Linux are planned.

Which show would you learn from first?