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Free, no-signup spaced-repetition flashcard app for language and general learning, using the SuperMemo SM-2 algorithm.

9.1K saves
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
Talkpal logo
Talkpal
✓ verifiedFreemium

AI language coach offering conversational practice with real-time feedback across 130+ languages.

1.5M visits/mo9.9K saves
Pricing
Free: €0 (unlimited words, sets, and flashcards)

No public pricing

No public pricing

Free trial available

Core features
  • Spaced repetition scheduling (SuperMemo SM-2)
  • No account required, local browser storage
  • Offline access to flashcards
  • Audio pronunciation support
  • Progress tracking and statistics
  • Optional AI translation and writing correction (bring-your-own API key)
  • Dual subtitles on Netflix and YouTube
  • Click-to-lookup word translations
  • Saveable vocabulary items
  • Playback controls for language study
  • Works as a browser extension
  • Conversational practice with AI tutors
  • Real-time personalized feedback and corrections
  • Dialogue, sentence, word, call, photo, and debate modes
  • Voice interaction with natural AI voices
  • Grammar courses and language certificates
  • 130+ languages on web, iOS, and Android
Use cases
  • Self-directed language learners building custom vocabulary decks
  • Students studying any subject with spaced repetition
  • Learners wanting offline-capable flashcards without an account
  • Users wanting AI-assisted translation while building flashcards
  • Learn a language while watching shows
  • Look up and save new words from video
  • Study with dual subtitles
  • Self-learners practicing conversational fluency
  • Business teams training employees in new languages
  • Students supplementing classroom language education
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