# Molecular Formula Generator vs WebMO Molecule Editor

The clearest difference is rating: Molecular Formula Generator at 5.0 against WebMO Molecule Editor's 4.0. Molecular Formula Generator also leads on in-app purchases (none vs 2) and iOS requirement (7.0 vs 12.0). WebMO Molecule Editor's advantage is update cadence (every 3 months vs every 16 months) and ratings volume (40 vs 3). 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. Molecular Formula Generator asks for nothing beyond the download.

Molecular Formula Generator 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 3, so its average is the more settled of the two.

Molecular Formula Generator ships an update every 16 months, WebMO Molecule Editor every 3 months. The most recent releases landed on June 6, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Molecular Formula Generator | WebMO Molecule Editor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/molecular-formula-generator/id646768652/reviews)** | [4.0 (40 ratings)](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews) |
| Number of ratings | 3 | **40** |
| Positive reviews | — | 60.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 12 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kirill Blinov](https://appshunter.io/developer/630833420) | [WebMO, LLC](https://appshunter.io/developer/797898098) |

## What reviewers say

### Molecular Formula Generator

[App page](https://appshunter.io/ios/app/molecular-formula-generator/id646768652)

This app generates a comprehensive list of molecular formulas based on mass spectrometry data and elemental composition. Users can specify m/z values, mass accuracy, and potential elements to find matching formulas. The generated lists can be shared via email.

**Highlights:** Generate molecular formulas by m/z value, Specify mass accuracy, Define elemental composition, Include double bond equivalents, Share formula lists via email

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Molecular Formula Generator free?

Molecular Formula Generator is free to download, with no in-app purchases.

### Is WebMO Molecule Editor free?

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

### Which has better reviews, Molecular Formula Generator or WebMO Molecule Editor?

Molecular Formula Generator is rated higher. Molecular Formula Generator averages 5.0 out of 5 from 3 ratings, while WebMO Molecule Editor averages 4.0 from 40 ratings.

### Do Molecular Formula Generator or WebMO Molecule Editor have ads?

Neither Molecular Formula Generator nor WebMO Molecule Editor shows ads.

### Which is updated more often, Molecular Formula Generator or WebMO Molecule Editor?

Molecular Formula Generator ships an update every 16 months, and WebMO Molecule Editor every 3 months. Most recently, Molecular Formula Generator was updated on June 6, 2026 and WebMO Molecule Editor on September 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.*