# DouDou Chinese

> DouDou Chinese (Chinese name: 句式, pinyin: jùshì, meaning "sentence pattern") is a mobile app (iOS and Android) that teaches Mandarin Chinese by having learners actively build sentences from the 100 most essential sentence patterns, with instant AI feedback and FSRS-based spaced repetition review.

## What it does

- Teaches sentence patterns rather than isolated vocabulary, so learners internalize the grammatical structures natural conversation is built on.
- Learners actively produce Chinese sentences using each pattern and receive instant AI feedback on mistakes.
- Reviews are scheduled with FSRS (Free Spaced Repetition Scheduler), timing each flashcard or audio review just before the learner is likely to forget it.
- Includes spaced-repetition flashcards, spaced-repetition audio loops (playable in the background), and data sync across devices.
- No signup is required to start using the app.

## Pricing

- Free plan: spaced repetition flashcards, spaced repetition audio loops, cross-device sync, basic settings.
- Premium plan ($5/month, 7-day free trial): adds an AI tutor chat, unlimited card access, background audio loops, premium settings, FSRS fine-tuning, and learning statistics.

## Platforms

- iOS: https://apps.apple.com/de/app/%E5%8F%A5%E5%BC%8F/id6746727374
- Android: https://play.google.com/store/apps/details?id=com.doudouchinese.jushi

## Pages

- Homepage: https://doudou-chinese.com/
- Imprint: https://doudou-chinese.com/imprint.html