# The NIHSS vs Epilepsy Registry

The clearest difference is iOS requirement: The NIHSS at 12.0 against Epilepsy Registry's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

The NIHSS ships an update every 7 months, Epilepsy Registry every 10 months. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | The NIHSS | Epilepsy Registry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Size | 190 MB | 21 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Pace Online](https://appshunter.io/developer/1481576155) | [NEUROLOGY AWARENESS & RESEARCH FOUNDATION](https://appshunter.io/developer/1469357150) |

## What reviewers say

### The NIHSS

[App page](https://appshunter.io/ios/app/the-nihss/id1608774216)

**Features:** macOS Compatibility

**In-app purchases:** none


### Epilepsy Registry

[App page](https://appshunter.io/ios/app/epilepsy-registry/id6752245348)

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

**In-app purchases:** none


## Frequently asked questions

### Is The NIHSS free?

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

### Is Epilepsy Registry free?

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

### Do The NIHSS or Epilepsy Registry have ads?

Neither The NIHSS nor Epilepsy Registry shows ads.

### Which is updated more often, The NIHSS or Epilepsy Registry?

The NIHSS ships an update every 7 months, and Epilepsy Registry every 10 months. Most recently, The NIHSS was updated on October 6, 2026 and Epilepsy Registry on October 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.*