jpdb

All-in-one learning platform for Japanese.

An all-in-one learning platform that combines a dictionary with a modern spaced repetition system. It features automatic vocabulary extraction, context-aware "i+1" sentence generation, and difficulty ratings for thousands of Japanese media titles.

What we love ❤️

  • Massive database of over 21,000 prebuilt decks for specific anime, visual novels, and light novels.
  • Uses a custom machine-learning spaced repetition algorithm designed to handle lapses better than standard Anki (SM-2).
  • Automatically generates "i+1" sentence cards, ensuring you learn new words in contexts where you understand the surrounding text.
  • Allows you to copy-paste text to extract vocabulary and learn it in chronological order.
  • Global progress tracking synchronizes your known vocabulary across all decks and suggests media you are ready to read.

Worth noting 💡

  • Requires a free account to track spaced repetition progress.
  • Currently in beta.

jpdb is an exceptional resource for Japanese learners who want to dive straight into native content rather than abstract lists. Its ability to analyze specific media and create tailored learning paths makes it significantly more efficient than generic study tools. While the interface is utilitarian, the underlying data and algorithms are top-tier.