YABAI
A Japanese slang learning application that covers authentic internet expressions and popular culture vocabulary. Its core design features oversized typographic flashcards, supports 13 interface languages, operates fully offline, and incorporates no gamification mechanics.
Timeline (last 90 days)
YABAI is a Japanese learning application featuring 308 real slang terms, internet expressions, and fandom vocabulary, with each word presented as a card designed around oversized Japanese typography.
Each entry in YABAI covers four dimensions: meaning, real-context example sentences, a vibe check, and the word's origin.
When the origin of a word is disputed or cannot be verified, YABAI directly labels it as unknown rather than fabricating an explanation.
According to developer Yuichi Sato, the entire YABAI product was built end-to-end through AI agents in Claude Code.
YABAI supports 13 languages and can be used fully offline, allowing all entries to be browsed without an internet connection.
YABAI explicitly states that it has no streaks, no quizzes, and no XP.
YABAI currently has 69 upvotes on Product Hunt, ranking 12th for the day, and is categorized under Android, Education, and Languages.
Whether the absence of feedback-incentive mechanisms will affect YABAI's long-term user retention remains to be tested by the market.
All Facts (7)
YABAI is a Japanese learning application featuring 308 real slang terms, internet expressions, and fandom vocabulary, with each word presented as a card designed around oversized Japanese typography.
50%UnverifiedEach entry in YABAI covers four dimensions: meaning, real-context example sentences, a vibe check, and the word's origin.
50%UnverifiedWhen the origin of a word is disputed or cannot be verified, YABAI directly labels it as unknown rather than fabricating an explanation.
50%UnverifiedAccording to developer Yuichi Sato, the entire YABAI product was built end-to-end through AI agents in Claude Code.
50%UnverifiedYABAI supports 13 languages and can be used fully offline, allowing all entries to be browsed without an internet connection.
50%UnverifiedYABAI explicitly states that it has no streaks, no quizzes, and no XP.
50%UnverifiedWhether the absence of feedback-incentive mechanisms will affect YABAI's long-term user retention remains to be tested by the market.
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