duiduidui!
Red Thread Labs LLC Education iPhoneiPadiPod touch
duiduidui! is a free Education app for iPhone and iPad by Red Thread Labs LLC. Rated 5.0/5 from 2 ratings. Requires iOS 16.4. Updated August 19, 2026.
- Rating
- 5.0
- 2 ratings
- Price
- Free
- on the App Store
- Size
- 111 MB
- Age 12+
- Updated
- Aug 19
- 2026 · v1.1.0
Screenshots
About duiduidui!
duiduidui! is the Chinese learning app that actually keeps up with you. At its heart is a comprehensive Mandarin dictionary — over 200,000 words and phrases, with pinyin, natural-speech audio, and example sentences for every entry. It goes well beyond the textbook, covering modern vocabulary, colloquial speech, and the slang people actually use online and in everyday conversation. Look anything up, tap to hear it — and it all works offline, so your dictionary is with you on the subway, on a plane, or anywhere the signal drops. But duiduidui! is more than a dictionary: • Your own phrasebook — Star any word or phrase to build a personal phrasebook of favorites, always a tap away and ready to review whenever you want. • AI tutor — Chat in Chinese or English with a patient tutor that explains grammar, corrects you gently, and answers "but why?" as many times as you need. • Snap to translate — Point your camera at a sign, a menu, or handwriting and get an instant translation. • Adaptive flashcards — The review system tracks what you actually know and steers you toward the cards you're ready to learn next — never too easy, never overwhelming. • Real progress — Watch your vocabulary, streaks, and skill level grow, session by session. How it works duiduidui! learns your strengths and gaps as you study, then balances new words against review so you stay in the sweet spot for learning. The more you use it, the better it fits you. Start with a 7-day full-access trial — the entire dictionary, the AI tutor, and adaptive flashcards, free for a week. No commitment up front. Whether you're learning your first character or polishing toward fluency, duiduidui! grows with you. 对对对 — "right, right, right." — Subscription details: • After the free trial, duiduidui! offers Monthly ($12.99) and Annual ($89.99) subscriptions. • Payment is charged to your Apple ID at confirmation of purchase. • Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. • Manage or cancel anytime in your Apple ID settings. • Terms of Use: https://duiduidui.app/en/terms-of-service/ • Privacy Policy: https://duiduidui.app/en/privacy-policy/
What’s new
Version 1.1.0 · Updated August 19, 2026
What's New in 1.1.0 • Dictionary download now recovers from connection hiccups, shows progress, and says clearly when you're offline • Starred words and review progress sync reliably, including after a reinstall or device switch • Profile photos upload and appear for your study partners • Fixed a crash when signing out and back in • Fixed phone-number sign-in occasionally rejecting a valid number • New setting: turn off content warnings on dictionary entries • Flip-card controls now always respond • Search and dictionary layout refinements • Framework updates for performance
App privacy
The developer, Red Thread Labs LLC, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
- Contact Info: Name, Email Address, Phone Number
- User Content: Photos or Videos, Other User Content
- Purchases: Purchase History
- Search History: Search History
- Identifiers: User ID
Used for: Analytics, Product Personalization, App Functionality
Alternatives to duiduidui!
Looking for apps like duiduidui!? Here are 6 similar apps on the App Store. The highest rated is Hanly (4.9/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| duiduidui! | 5.0 / 5 (2 ratings) | Free | August 19, 2026 | |
| Hanly | 4.9 / 5 (407) | Free | Aug 16, 2026 | Compare |
| Speak Chinese: Learn Mandarin | 4.5 / 5 (285) | Free | Oct 25, 2026 | Compare |
| Skritter: Write Chinese | 4.7 / 5 (823) | Free | Sep 22, 2026 | Compare |
| HSK Study and Exam - SuperTest | 4.7 / 5 (1,057) | Free | Jun 10, 2026 | Compare |
| Chinese Stroke Order Character | 4.5 / 5 (687) | Free | Oct 15, 2026 | Compare |
| Laoshi: Learn Chinese & HSK | 4.6 / 5 (801) | Free | Oct 24, 2026 | Compare |
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