KingDraw vs Molecule Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KingDraw
This app is a professional tool for chemists to sketch molecules, reactions, and organic chemistry pathways. It offers advanced features like real-time 3D modeling and IUPAC name conversion, with multi-device synchronization and broad file format compatibility.
- Sketch molecules and reactions
- Real-time 3D modeling
- IUPAC name to structure conversion
- Multi-terminal synchronization
- Multi-format file saving
- Intelligent gesture drawing
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KingDraw App 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/
Molecule Simulator
Visualize the 3D structures of molecules using data from PubChem and Protein Data Bank. Explore molecules in various viewing modes and download an extensive library of compounds.
- 3D molecular visualization
- Space filling mode
- Ball-and-stick mode
- Data from PubChem
- Data from Protein Data Bank
- Downloadable molecule library
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This app is a molecular viewer. With the data on PubChem and Protein Data Bank, it can show us 3D structure of molecules. Both space filling mode and ball-and-stick mode. --------------------------------------------- Contains some pre-installed modes. And you can download all kinds of molecules from PubChem or Protein Data Bank.
Screenshots
Verdict
The clearest difference is rating: Molecule Simulator at 4.3 against KingDraw's 3.3. Molecule Simulator also leads on review sentiment (100% vs 59%) and in-app purchases (none vs 9). KingDraw's advantage is update cadence (every 3 weeks vs every 4 months) and iOS requirement (12.0 vs 15.0). On price, ratings volume, 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
Both are free to download. KingDraw sells 8 in-app purchases, starting at $1.99 per month. Molecule Simulator asks for nothing beyond the download.
Molecule Simulator holds the better App Store score, 4.3 against 3.3. Both are backed by a comparable volume of ratings — 58 and 24 respectively. Written reviews point the same way: 59% of KingDraw's written reviews are positive against 100% of Molecule Simulator's.
KingDraw ships an update every 3 weeks, Molecule Simulator every 4 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.
| Parameter | KingDraw | Molecule Simulator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (58 ratings) | 4.3 (24 ratings) — better |
| Positive reviews | 58.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 58 — better | 24 |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 187 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Qingdao KingAgroot Precision Agriculture Technology Co., Ltd. | 仕清 刘 |
Customer experience
KingDraw
Molecule Simulator
In-app purchases
KingDraw
- KingDrawVip-ContinuousMonthly$1.991 Month
- KingDrawVip-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
Molecule Simulator
No in-app purchases
Questions
Is KingDraw free?
Is Molecule Simulator free?
Which has better reviews, KingDraw or Molecule Simulator?
Do KingDraw or Molecule Simulator have ads?
Which is updated more often, KingDraw or Molecule Simulator?
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