KingDrawHD vs CNKI EXPRESS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KingDrawHD
This app is a professional chemical drawing editor for sketching molecules, reactions, and organic chemistry pathways. It offers features like real-time 3D modeling, IUPAC name conversion, and intelligent gesture drawing. The app supports multi-terminal synchronization and saving files in various common chemical drawing formats.
- Real-time 3D modeling
- IUPAC name to structure conversion
- Structural formula searching
- Intelligent gesture drawing
- Multi-terminal synchronization
- Multi-format file saving
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KingDraw is a chemical drawing editor that allows users to sketch molecules and reactions as well as organic chemistry objects and pathways.A good idea can change the world. KingDraw will record all your inspirations. Just enjoy creation. KingDraw, professional structural formula tool, creates a special work station for chemists! Main Features: Top-speed drawing Many powerful functions, like real time 3D modeling, conversion between IUPAC names and chemical structures, structural formula searching, chemical property analysis, intelligent gesture drawing, intelligent beautifying, etc. Multi-terminal synchronization Get and share your files from your device, PC, or any other device you use. No matter where you are, use the KingDraw mobile app to keep you productive and work together. KingDraw Cloud makes it easy to handle your files when you're out. Multi-format compatibility Easily saved as several file formats commonly used in chemical drawing softwares, for example cdx., mol., SMILES, etc. It also supports drawing standards like ACS 1996. [Feedback] If you have more questions, pls feel free to contact us on Twitter @KingDraw_chem [LICENSED APPLICATION END USER LICENSE AGREEMENT] https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
CNKI EXPRESS
Access a vast collection of academic resources including journals, dissertations, and newspapers. Customize your research experience with personalized updates and multiple reading formats. Available for users in China, Hong Kong, Macao, Taiwan, and other international regions.
- Unified search for academic resources
- Access journals, dissertations, newspapers, and conference papers
- Multiple reading formats (PDF, HTML, EPUB)
- Personalized library for research updates
- Institutional user services
- Free re-download of previously purchased documents
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CNKI Express: Striving to be an Excellent Academic App. (CNKI Official App) Services are available for China HK, Macao, Taiwan, and other overseas regions and countries. Leveraging its extensive experience in integrating 600 million Chinese and foreign literature and knowledge, CNKI strives to create a more comprehensive academic research service system. It provides one-stop digital resources including academic journals, dissertations/theses, newspapers, and conference papers to overseas users. Basic Features: - Unified search for various resources such as journals, dissertations/theses, newspapers, and conference papers, enabling one-stop access to academic achievements.- Offers multiple reading formats, including PDF, HTML, and EPUB for varied reading experiences. Highlighted Features - My Library: Users can customize and track the latest updates in their research fields and journals, keeping up with the newest scientific advancements in real time. - Linked Institutions: Offers enhanced services tailored to institutional users, providing a more comprehensive experience. Notes Previously purchased documents on CNKI can be downloaded again for free via the App.
Screenshots
Verdict
The clearest difference is review sentiment: KingDrawHD at 73% against CNKI EXPRESS's 0%. KingDrawHD also leads on rating (4.1 vs 1.8). CNKI EXPRESS's advantage is update cadence (every 8 days vs monthly) and device support (3 vs 1). On price, ratings volume, ads and in-app purchases 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
Both are free to download. KingDrawHD sells 8 in-app purchases, starting at $1.99 per month and CNKI EXPRESS sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
KingDrawHD holds the better App Store score, 4.1 against 1.8. Both are backed by a comparable volume of ratings — 14 and 10 respectively. Written reviews point the same way: 73% of KingDrawHD's written reviews are positive against 0% of CNKI EXPRESS's.
KingDrawHD ships an update monthly, CNKI EXPRESS every 8 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | KingDrawHD | CNKI EXPRESS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (14 ratings) — better | 1.8 (10 ratings) |
| Positive reviews | 73.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 14 — better | 10 |
| Update frequency | Monthly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 170 MB | 242 MB |
| Age rating | 4+ | 17+ |
| Developer | Qingdao KingAgroot Precision Agriculture Technology Co., Ltd. | Tongfang Knowledge Network (Beijing) Technology Co., Ltd. |
Customer experience
KingDrawHD
CNKI EXPRESS
In-app purchases
KingDrawHD
- KingDrawVip-ContinuousMonthly$1.991 Month
- KingDrawHD-ContinuousMonthly$9.991 Month
- KingDraw一天会员$0.99
- KingDraw一个月会员$2.99
- Monthly Member$9.99
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- Monthly Member$11.99
- KingDraw一年会员$14.99
- Annual Member2 variants$99.99
CNKI EXPRESS
- 20知识点$19.99
- 50知识点$49.99
- 100知识点$99.99
Show 3 moreShow fewer
- 200知识点$199.99
- 300知识点$299.99
- 500知识点$499.99








