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Language REACTOR logo
Language REACTOR
✓ verifiedFreemium

Browser extension that adds dual subtitles and click-to-lookup to Netflix and YouTube for learning languages.

1.7M visits/mo
Deep English logo
Deep English
✓ verifiedFreemium

Story-based English fluency program with free listening lessons and a paid live-practice membership with an AI voicebot.

355K visits/mo
InterSub logo
InterSub
✓ verifiedFreemium

Browser extension offering interactive dual subtitles and instant word translations for language learning while streaming.

100K visits/mo
Lingotrack logo
Lingotrack
✓ verifiedFreemium

Social tracker for language immersion that logs study time and media while surfacing level-appropriate content.

48K visits/mo
Elsa Speak logo
Elsa Speak
✓ verifiedFreemium

AI English pronunciation and speaking coach giving real-time feedback via speech recognition, used by millions.

1.2M visits/mo6.7K saves
Pricing

No public pricing

No public pricing

Free trial available

Free: $0/mo
Pay-as-you-go: from $1.50
Premium: from $6/mo

Free trial available

Free: $0/mo (track one language)
Pro: $3/mo (unlimited languages)
1 month: $35.5
3 months: $58
1 year: $85.19 (from $141.99)
Lifetime: $119.99 (from $799.99)
Core features
  • Dual subtitles on Netflix and YouTube
  • Click-to-lookup word translations
  • Saveable vocabulary items
  • Playback controls for language study
  • Works as a browser extension
  • Story-based listening lessons
  • Shadowing practice for flow
  • AI chatbot/voicebot conversation practice
  • Pronunciation checking
  • Live small-group Zoom speaking sessions (members)
  • Spaced-repetition vocabulary
  • Interactive dual subtitles
  • Instant hover word translations
  • On-the-fly subtitle translation
  • Personal wordbook with Anki sync
  • Multi-platform (YouTube, Netflix, Coursera, etc.)
  • Phrase/idiom collocation detection
  • One-click activity and media logging
  • Crowdsourced, difficulty-rated content database
  • Progress dashboards and visualizations
  • Community leaderboards and reading challenges
  • AI-assisted logging and GPT integration
  • Real-time pronunciation feedback
  • Speech-recognition assessment
  • Personalized learning path
  • Thousands of gamified lessons across topics
  • Progress tracking
  • ELSA Dictionary
Use cases
  • Learn a language while watching shows
  • Look up and save new words from video
  • Study with dual subtitles
  • Improving English speaking fluency
  • Practicing conversation with AI
  • Building listening comprehension
  • Joining live speaking practice sessions
  • Learning a language via shows and courses
  • Looking up words while watching
  • Building and reviewing vocabulary
  • Tracking immersion hours and media consumed
  • Finding level-appropriate foreign content
  • Connecting and competing with other learners
  • Improving English pronunciation
  • Building speaking confidence
  • Preparing for work or travel in English
  • Daily 10-minute practice
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