# Action Potentials vs Neurology Peripheral Exam

The clearest difference is price: Action Potentials at Free against Neurology Peripheral Exam's $1.99. Action Potentials also leads on update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Action Potentials is free to download; Neurology Peripheral Exam costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Action Potentials ships an update every 3 weeks, Neurology Peripheral Exam every 2 months. The most recent releases landed on October 11, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Action Potentials | Neurology Peripheral Exam |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.7 (13 ratings)](https://appshunter.io/ios/app/action-potentials/id1527893283/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 1 MB | 25 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Beau Forest](https://appshunter.io/developer/1527893285) | [Anna Maria Delios](https://appshunter.io/developer/1780547512) |

## What reviewers say

### Action Potentials

[App page](https://appshunter.io/ios/app/action-potentials/id1527893283)

Explore the mechanics of action potentials in real-time. Adjust parameters and introduce various drugs to observe their impact on neuronal signaling. Choose between single event simulations or continuous manual current injections.

**Highlights:** Real-time action potential visualization, Adjustable simulation parameters, Drug effect simulation (lidocaine, tetrodotoxin, TEA), Single action potential mode, Continuous manual current injection

**Features:** macOS Compatibility

**In-app purchases:** none


### Neurology Peripheral Exam

[App page](https://appshunter.io/ios/app/neurology-peripheral-exam/id6738389085)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Action Potentials free?

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

### Is Neurology Peripheral Exam free?

Neurology Peripheral Exam costs $1.99, with no in-app purchases.

### Do Action Potentials or Neurology Peripheral Exam have ads?

Neither Action Potentials nor Neurology Peripheral Exam shows ads.

### Which is updated more often, Action Potentials or Neurology Peripheral Exam?

Action Potentials ships an update every 3 weeks, and Neurology Peripheral Exam every 2 months. Most recently, Action Potentials was updated on October 11, 2026 and Neurology Peripheral Exam on October 27, 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.*