# WebMO Molecule Editor vs Chemy

The clearest difference is rating: Chemy at 5.0 against WebMO Molecule Editor's 4.0. Chemy also leads on in-app purchases (none vs 2) and update cadence (every 4 days vs every 3 months). WebMO Molecule Editor's advantage is ratings volume (40 vs 6) and iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. WebMO Molecule Editor sells 2 one-off in-app purchases. Chemy asks for nothing beyond the download.

Chemy holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: WebMO Molecule Editor has 40 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 60% of WebMO Molecule Editor's written reviews are positive against 89% of Chemy's.

WebMO Molecule Editor ships an update every 3 months, Chemy every 4 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | WebMO Molecule Editor | Chemy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (40 ratings)](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/chemy-chemistry-companion/id1542390153/reviews)** |
| Number of ratings | **40** | 6 |
| Positive reviews | 60.4% of reviews | **88.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [WebMO, LLC](https://appshunter.io/developer/797898098) | [Zhijin Chen](https://appshunter.io/developer/755385892) |

## What reviewers say

### WebMO Molecule Editor

[App page](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095)

Create and explore 3D molecular structures, visualize chemical properties, and access extensive chemical databases. This tool is ideal for students and educators needing on-the-go access to molecular information and computational chemistry resources.

**Highlights:** 3D molecular editor, Structure optimization, Orbital and symmetry visualization, Chemical database lookup, Spectra visualization, High-resolution image capture, Computational chemistry program integration

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WebMO Premium for paid users | Free | one-time |
| WebMO Premium | $4.99 | one-time |


### Chemy

[App page](https://appshunter.io/ios/app/chemy-chemistry-companion/id1542390153)

This app provides a user-friendly periodic table with detailed element attributes. It offers tools for formatting chemical formulas, analyzing elements, and creating advanced molecular models. Users can also open and visualize molecule model files in various formats.

**Highlights:** Intuitive periodic table with element attributes, Chemical formula formatting, Predictive mass spectrum and elemental analysis, Advanced carbon nanotube and graphene modeling, Export models as GJF or XYZ files, Open and visualize molecule model files (xyz, gjf)

**In-app purchases:** none


## Frequently asked questions

### Is WebMO Molecule Editor free?

WebMO Molecule Editor is free to download, with in-app purchases available.

### Is Chemy free?

Chemy is free to download, with no in-app purchases.

### Which has better reviews, WebMO Molecule Editor or Chemy?

Chemy is rated higher. WebMO Molecule Editor averages 4.0 out of 5 from 40 ratings, while Chemy averages 5.0 from 6 ratings.

### Do WebMO Molecule Editor or Chemy have ads?

Neither WebMO Molecule Editor nor Chemy shows ads.

### Which is updated more often, WebMO Molecule Editor or Chemy?

WebMO Molecule Editor ships an update every 3 months, and Chemy every 4 days. Most recently, WebMO Molecule Editor was updated on November 1, 2026 and Chemy on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*