Compare LangKey with Other Tools
No hit pieces — each comparison lists where the other tool still wins, so you can choose based on facts.
LangKey vs Language Reactor: An Honest Comparison
The free Language Reactor alternative with what it lacks: dictation, shadowing, AI conversation, Bilibili support and no Pro paywall. Open source.
Language Reactor for Firefox: What Actually Works Instead
There is no Language Reactor for Firefox — it only works on Chrome. Compare language learning extensions that run on Firefox: LangKey, Trancy, asbplayer.
LangKey vs Trancy: An Honest Comparison
Trancy fills missing subtitles with AI translation. LangKey uses real caption tracks, then adds dictation, shadowing and SRS review — free and open source.
LangKey vs Migaku: An Honest Comparison
Migaku puts card making behind a subscription. LangKey keeps SRS review free, needs no setup, and adds dictation, shadowing and AI chat.
LangKey vs Immersive Translate: Translation Tool vs Learning Tool
Immersive Translate reads foreign pages for you. LangKey teaches instead — subtitles, dictation, shadowing, AI chat and SRS review, free and open source.
LangKey vs asbplayer: An Honest Comparison
asbplayer mines local video files into Anki beautifully, but expects subtitle files and AnkiConnect setup. LangKey works on its own — compare the two.
LangKey vs LingQ: An Honest Comparison
LingQ is strong for reading and listening, with no video support at all. Compare it with LangKey, which adds subtitles, 7 practice modes and SRS review.
LangKey vs Lingopie: An Honest Comparison
Lingopie sells a curated catalogue and dropped Netflix support in 2025. LangKey keeps your own YouTube and Bilibili, adds practice modes and SRS — free.
Roundups & buying guides
Best Language Learning Chrome Extensions in 2026
Compare 10 language learning Chrome extensions on dual subtitles, dictation, shadowing, SRS review, platforms and price — with honest limitations for each.
Best Dual Subtitles Extension for Learning Languages
How dual subtitle extensions work, which sites they cover, and how to set one up in 30 seconds. Compares LangKey, Language Reactor, Trancy and more.