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Master Chinese characters.

Look up any word. FluentBits handles the rest: FSRS spaced repetition, character decomposition, native audio.

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FluentBits word detail showing the characters, origin, and examples for apple.

Understand words, character by character

See what each character contributes—and how the whole word is used in real sentences.

FluentBits word detail showing common pairings and related words.

See how words connect

Explore common pairings, related words, and the characters they share.

FluentBits pinyin quiz for the Chinese word for weather.

Make every tone count

Practice the pronunciation that turns a familiar character into the right word.

FluentBits Daily Picks showing themed vocabulary groups.

A fresh path into new vocabulary

Browse small, themed groups of words and add the ones worth learning.

FluentBits personal word library with meanings, pinyin, and tone confidence.

Build a vocabulary that is yours

Keep words, meanings, pinyin, and tone confidence together in one clear library.

FluentBits quote reader showing a Chinese sentence and its English translation.

Read Chinese in context

Move from the original sentence to pinyin and a natural translation without losing your place.

Built for learners who want depth, not streaks.

Download on theApp StoreComing soon

Simplified and Traditional. Offline dictionary. iCloud sync.