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Originally shared on Hacker News

RainbowSay

RainbowSay is a language-learning app that automatically pauses video (e.g. K-dramas on Netflix) when it detects a complete sentence and generates translation, per-word vocabulary breakdowns, and grammar explanations of the subtitles using AI. It also accepts voice input from the microphone for deliberate speaking practice of what was learned and supports spaced repetition.

Last shared
01 / The problem

What it addresses

Learning from foreign-language video previously required manually pausing playback and copy-pasting subtitles into an AI chat to get vocabulary breakdown, translation, and grammar analysis.

02 / Source history

Shared over time

Each entry reflects what was shared on that date. Details may have changed since then.

  1. RainbowSay

    RainbowSay is a language-learning app that automatically pauses video (e.g. K-dramas on Netflix) when it detects a complete sentence and generates translation, per-word vocabulary breakdowns, and grammar explanations of the subtitles using AI. It also accepts voice input from the microphone for deliberate speaking practice of what was learned and supports spaced repetition.

    Problem: Learning from foreign-language video previously required manually pausing playback and copy-pasting subtitles into an AI chat to get vocabulary breakdown, translation, and grammar analysis.

    Posted by @gigapotential · Original comment ↗

    “RainbowSay https://rainbowsay.ai/ I used to watch K-drama on Netflix and pause it to copy paste subtitles in AI chat to do vocabulary breakdown, translation and grammar. So I automated it in an app which auto pauses video when it detects a sentence and gives translation, vocabulary (for every word) and grammar. I also added same to voice from microphone, for deliberate practice speaking what was learned. To help with spaced repetition.”