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Quality

How we check every question

Wrong readings and unnatural example sentences teach you the wrong Japanese. So accuracy is not a promise here — it's a process, with real numbers.

JLPT questions, native-checked4,913
Skill drill questions631
Vocabulary words with native-quality audio8,488
Audio clips recorded33,194

The process

  1. Written, then checked by a native speakerEvery sentence, reading and answer choice is drafted with AI assistance, then read and corrected by a native Japanese speaker before you ever see it.
  2. A pass/flag ledger for every questionEach question carries a review status in a ledger. Anything flagged is pulled from delivery until it's fixed — no silent shipping.
  3. You can flag anything, anywhereEvery question and explanation has thumbs up/down and a report link. If something feels off, two taps tell us.
  4. Low-rated content goes back in the queueRatings feed a review queue that we work through continuously. Fixes ship in updates — mistakes don't get to stay.

Spotted something wrong? Use the thumbs-down on any question — it goes straight to our review queue.

Why content is in this order →