# The Nernst/Goldman Equation Simulator

> Educational tool for visualizing Nernst and Goldman potentials with adjustable ion parameters. (iPhone/iPad app by University of Arizona.)

- Source: https://appshunter.io/ios/app/the-nernstgoldman-equation-simulator/id1022504095 (this page in markdown: same URL + `.md`)
- Developer: [University of Arizona](https://appshunter.io/developer/437682109)
- Category: Education, Medical
- Price: Free
- Rating: 3.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 8.1 · 15 MB
- Languages: American English
- Released: 2015-07-27
- Data updated: 2026-06-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/the-nernstgoldman-equation-simulator/id1022504095/reviews.md

## What is The Nernst/Goldman Equation Simulator?

The Nernst/Goldman Equation Simulator provides a visualization of the Nernst and Goldman potentials given user-defined values for the relevant parameters. Users may adjust the permeability, extracellular concentration, and intracellular concentration of potassium, sodium, and chloride ions and observe the resulting changes, in real-time, for the electrical potential difference as calculated using the selected equation. Preset values are provided for common cell types.​

## Key features

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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/the-nernstgoldman-equation-simulator/id1022504095/reviews.md

### 5/5 — Nice to see it’s in app form now!

*2018-07-08*

I’ve been using the online version in my tutes for a number of years now, but never liked that it need Flash (esp. now that its being phased out), and it wouldn’t work on my iPad. So glad it has an app now!

## Frequently asked questions about The Nernst/Goldman Equation Simulator

### What is the Nernst/Goldman Equation Simulator?

The Nernst/Goldman Equation Simulator is a free educational tool that visualizes Nernst and Goldman potentials. It allows users to adjust ion concentrations and permeabilities to observe real-time changes in electrical potential difference.

### What are the learning benefits of the Nernst/Goldman Equation Simulator?

This simulator helps users understand the complex relationships between ion concentrations, membrane permeability, and electrical potential. It provides a hands-on way to explore concepts crucial in biophysics and neuroscience.

### Does the Nernst/Goldman Equation Simulator offer pre-set configurations?

Yes, the simulator includes preset values for common cell types, allowing users to quickly explore typical scenarios without needing to input all parameters from scratch.

### What devices support the Nernst/Goldman Equation Simulator?

The Nernst/Goldman Equation Simulator is available for iPhone, iPad, and iPod devices, making it accessible for a wide range of Apple users.

### What is the age rating for the Nernst/Goldman Equation Simulator?

The app has an age rating of 12+, indicating it is suitable for users aged 12 and above, aligning with its educational content.

### How often is the Nernst/Goldman Equation Simulator updated?

The latest version of the simulator was released as 2.0 on October 13, 2015. While it has not been updated recently, its core functionality remains relevant for educational purposes.

### Does the Nernst/Goldman Equation Simulator have ads?

No, the Nernst/Goldman Equation Simulator is ad-free, providing an uninterrupted learning experience for its users.

### What is the user rating for the Nernst/Goldman Equation Simulator?

The app has a rating of 3.0 stars based on 2 user reviews. This suggests a mixed reception, with potential areas for improvement noted by users.

## Version history (last 2 releases)

### 2.0 — 2015-10-13

This app has been updated by Apple to display the Apple Watch app icon.

Users can now save custom measurement presets for later use. A knowledge base has been added to assist in understanding the concepts behind the Nernst and Goldman equations.

### 1.0 — 2015-07-24

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*