We checked.
Nobody does all of it.
Dual-language captions, live streams, click-to-seek transcripts, translation that only pays for what you watch — every tool ships a piece. Echo ships the set.
TEN THINGS, ONE EXTENSION
Captions
CaptionsYouTube CCbuilt-in auto-translate
Language Reactorlearning, YT & Netflix
Live caption toolsFelo, ViiTor, Maestra…
Twitch & Kick, not just YouTube+
✓
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Real-time live translation (~300ms)+
✓
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✓
Translation that sounds native+
✓
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Bilingual subtitles on the player+
✓
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✓
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Click-to-seek transcript in the player+
✓
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✓
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Lazy translation — pay for what you watch+
✓
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Search the transcript+
✓
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Subtitle styling, live preview+
✓
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Bring your own key, custom prompts+
✓
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No watch-history telemetry+
✓
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Based on public Chrome Web Store listings, June 2026. Tap a row for the honest detail.✓ yes · ~ partial · — no
Free to start · YouTube, Twitch, Kick & Crunchyroll · 14 languages