Chinese Annotator vs 句式
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chinese Annotator
This app helps you learn Chinese by reading ePub books. It allows you to add Pinyin and English definitions directly to the text, and track your vocabulary knowledge. You can also export your learned words for flashcard review.
- Import ePub files
- Add Pinyin and English definitions
- Track known words and characters
- Hide known Pinyin/definitions
- Export word lists for flashcards
- Print pages to PDF
Read full descriptionHide full description
A Chinese ePub reader to assist you in reading Chinese characters. After importing an ePub, you can add Pinyin and English on to the text in a 3-line format. After annotating the text in this way, you can then mark on a word by word basis which definitions you already know and which characters you know. There is a setting that hides the pinyin or definitions of words that you know. In this way, you are forced to look at the character and recall it instead of relying on pinyin. A word list is also available to allow you to see all words, words with unknown definitions, or words with unknown pinyin. This list of words can be exported to a file to be imported in to a flash card system, like Pleco. This allows you to easily pick out all the words you don't know in a publication and review them. You can also print the page of the book currently being displayed. In iOS 10 and greater, you can print to PDF.
句式
This app focuses on teaching practical Chinese sentence structures instead of just vocabulary. It uses AI feedback and spaced repetition to help users build and speak real sentences confidently.
- Learn sentence patterns in context
- Build real sentences with AI feedback
- FSRS spaced repetition
- AI tutor chat (premium)
- Background audio practice (premium)
- Full learning statistics (premium)
Read full descriptionHide full description
You know hundreds of Chinese words. So why does forming a sentence still feel impossible? Most apps hand you flashcards and hope grammar sorts itself out. It doesn't. You end up with a head full of vocabulary and no idea how to string it into something you'd actually say. DouDou Chinese (句式) fixes the real bottleneck: sentence patterns, not word lists. Learn the 100 structures that natural Mandarin conversation is actually built on, then build your own sentences with each one — with instant AI feedback the moment you get it wrong, so mistakes never turn into habits. HOW IT WORKS • Learn a pattern in context, not in isolation • Apply it immediately by building real sentences • Get instant AI feedback and fix mistakes on the spot • Review with FSRS spaced repetition — timed to hit right before you'd forget, so nothing you learn quietly slips away No signup, no setup. Open the app and you're already practicing. WHY IT'S DIFFERENT Vocabulary apps make you feel like you're learning. Sentence patterns make you able to speak. That's the difference between recognizing "你好吗" on a flashcard and actually holding a conversation. FREE, NO CATCH • Spaced repetition flashcards • Spaced repetition audio loops • Sync across all your devices • Basic settings GO PREMIUM — 7-day free trial, then $5/month • AI tutor chat, on demand • 20,000 quiz tokens a day • Every pattern, unlocked • Background audio, so you can practice on your commute • Fine-tune the FSRS algorithm to your pace • Full learning statistics Cancel any time in your account settings — no pressure, no hoops. Every day you put off speaking is another day it feels harder to start. Download DouDou Chinese and build your first real Chinese sentence in the next five minutes. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: 句式 at Free against Chinese Annotator's $0.99. 句式 also leads on rating (5.0 vs 4.1). Chinese Annotator's advantage is in-app purchases (none vs 1) and ratings volume (30 vs 1). On update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
句式 is free to download; Chinese Annotator costs $0.99 up front. 句式 sells 1 in-app purchase, starting at $4.99 per month. Chinese Annotator asks for nothing beyond the download.
句式 holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Chinese Annotator has 30 ratings behind it against 1, so its average is the more settled of the two.
Chinese Annotator ships an update every 2 weeks, 句式 every 3 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.
| Parameter | Chinese Annotator | 句式 |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.1 (30 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 72.0% of reviews | — |
| Number of ratings | 30 — better | 1 |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 65 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Jon Hargett | Fabian Grimme |
Customer experience
Chinese Annotator
句式
In-app purchases
Chinese Annotator
No in-app purchases
句式
- Premium7 Days trial$4.991 Month









