# WebMO Molecule Editor vs The Nernst/Goldman Equation Simulator

The clearest difference is rating: WebMO Molecule Editor at 4.0 against The Nernst/Goldman Equation Simulator's 3.0. WebMO Molecule Editor also leads on ratings volume (40 vs 2). The Nernst/Goldman Equation Simulator's advantage is review sentiment (100% vs 60%) and in-app purchases (none vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. WebMO Molecule Editor sells 2 one-off in-app purchases. The Nernst/Goldman Equation Simulator asks for nothing beyond the download.

WebMO Molecule Editor holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: WebMO Molecule Editor has 40 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 60% of WebMO Molecule Editor's written reviews are positive against 100% of The Nernst/Goldman Equation Simulator's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 3, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | WebMO Molecule Editor | The Nernst/Goldman Equation Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (40 ratings)](https://appshunter.io/ios/app/webmo-molecule-editor/id797898095/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/the-nernstgoldman-equation-simulator/id1022504095/reviews) |
| Number of ratings | **40** | 2 |
| Positive reviews | 60.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 15 MB |
| Requires iOS | 12.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [WebMO, LLC](https://appshunter.io/developer/797898098) | [University of Arizona](https://appshunter.io/developer/437682109) |

## 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 |


### The Nernst/Goldman Equation Simulator

[App page](https://appshunter.io/ios/app/the-nernstgoldman-equation-simulator/id1022504095)

Visualize Nernst and Goldman potentials with customizable ion concentrations and permeabilities. See real-time changes in electrical potential difference for common cell types.

**Highlights:** Nernst potential visualization, Goldman potential visualization, Adjustable ion parameters, Real-time potential updates, Preset values for cell types

**Features:** macOS Compatibility

**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 The Nernst/Goldman Equation Simulator free?

The Nernst/Goldman Equation Simulator is free to download, with no in-app purchases.

### Which has better reviews, WebMO Molecule Editor or The Nernst/Goldman Equation Simulator?

WebMO Molecule Editor is rated higher. WebMO Molecule Editor averages 4.0 out of 5 from 40 ratings, while The Nernst/Goldman Equation Simulator averages 3.0 from 2 ratings.

### Do WebMO Molecule Editor or The Nernst/Goldman Equation Simulator have ads?

Neither WebMO Molecule Editor nor The Nernst/Goldman Equation Simulator shows ads.

### Which is updated more often, WebMO Molecule Editor or The Nernst/Goldman Equation Simulator?

WebMO Molecule Editor ships an update every 3 months, and The Nernst/Goldman Equation Simulator every 3 months. Most recently, WebMO Molecule Editor was updated on September 3, 2026 and The Nernst/Goldman Equation Simulator on September 6, 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.*