A language gym with an opponent.

Practice should feel like playing

Vocabulary sticks when you use it under a little pressure. A duel gives you a reason to come back, and a rating shows you're getting better.

Fair before fun

Both players see the same questions on the same clock. Ratings use Glicko-2, Speed and Classic are rated separately, and games that end before they really start don't count.

Free means free

No ads, no subscriptions, no paid boosts. Nothing you can buy makes you rank higher.

Honest numbers

Every count, rating and record you see comes from real games and real word lists. If there's nothing to show yet, the app says so.

• 505,172 words in 6 languages

  English, Chinese, Yoruba, Spanish, French and Japanese, each in its own levels: HSK for Chinese, JLPT for Japanese, CEFR for Spanish and French, and estimated levels for Yoruba.

• 118,590 example sentences

  Real sentences with English translations, split into words for the sentence-building puzzles.

• Live duels

  Rated and casual, with challenges, rematches and full game reviews.

• A review deck

  Spaced repetition that brings each word back right before you'd forget it.

• Teams and communities

  Team Battles, community feeds and group chats.

• More languages

  Igbo, Hausa, German, Korean and others are being prepared. Each opens when its word list is complete.

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