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Credits

Tsumu uses several third-party tools and data sources:

  • Jitendex, based on JMdict from the Electronic Dictionary Research and Development Group; see Jitendex's legal page for attribution and license terms.
  • Kanjium by Uros Ozvatic, used for the bundled Japanese pitch accent database (pitch_accents.db).
  • manga-ocr by Maciej Budyś, used for Japanese text recognition.
  • FSRS for Rust from Open Spaced Repetition, used for review scheduling.
  • Lindera with IPAdic, used for Japanese text processing.
  • Google ML Kit text recognition, available as an alternative OCR engine on Android.
  • JapanesePod101 provides pronunciation audio fetched when a card is created.