Comparison

KingDraw vs Molecule Simulator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Sketch molecules and reactions
  • Real-time 3D modeling
  • IUPAC name to structure conversion
  • Multi-terminal synchronization
  • Multi-format file saving
  • Intelligent gesture drawing
Features
Read full description

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/

About

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.

Highlights
  • 3D molecular visualization
  • Space filling mode
  • Ball-and-stick mode
  • Data from PubChem
  • Data from Protein Data Bank
  • Downloadable molecule library
Features
Read full description

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

KingDraw3 screens
Molecule Simulator4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
KingDraw versus Molecule Simulator: the parameters behind the verdict, then further details
ParameterKingDrawMolecule Simulator
PriceFreeFree
Rating3.3 (58 ratings)4.3 (24 ratings) — better
Positive reviews58.8% of reviews100.0% of reviews — better
Number of ratings58 — better24
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.0
Further details — not scored
Size187 MB8 MB
Age rating4+4+
DeveloperQingdao KingAgroot Precision Agriculture Technology Co., Ltd.仕清 刘

Customer experience

KingDraw

All ratings58 ratings
Positive53.4%
Neutral10.3%
Negative36.2%
Written reviews34 reviews
Positive58.8%
Neutral8.8%
Negative32.4%

Molecule Simulator

All ratings22 ratings
Positive86.4%
Neutral0.0%
Negative13.6%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

KingDraw

Subscriptions2
  • KingDrawVip-ContinuousMonthly$1.991 Month
  • KingDrawVip-ContinuousMonthly$9.991 Month
One-time6
  • KingDraw一天会员$0.99
  • KingDraw一个月会员$2.99
  • Monthly Member$9.99
Show 3 more
  • Monthly Member$11.99
  • KingDraw一年会员$14.99
  • Annual Member2 variants$99.99
None

Molecule Simulator

No in-app purchases

Questions

Is KingDraw free?
KingDraw is free to download, with in-app purchases available.
Is Molecule Simulator free?
Molecule Simulator is free to download, with no in-app purchases.
Which has better reviews, KingDraw or Molecule Simulator?
Molecule Simulator is rated higher. KingDraw averages 3.3 out of 5 from 58 ratings, while Molecule Simulator averages 4.3 from 24 ratings.
Do KingDraw or Molecule Simulator have ads?
Neither KingDraw nor Molecule Simulator shows ads.
Which is updated more often, KingDraw or Molecule Simulator?
KingDraw ships an update every 3 weeks, and Molecule Simulator every 4 months. Most recently, KingDraw was updated on October 7, 2026 and Molecule Simulator on October 8, 2026.

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