# P.A.R.T. vs Herz Hz

The clearest difference is update cadence: Herz Hz at every 9 days against P.A.R.T.'s every 2 months. P.A.R.T.'s advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.6). On price, 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.

P.A.R.T. ships an update every 2 months, Herz Hz every 9 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | P.A.R.T. | Herz Hz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/part/id1126512332/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 181 MB | 70 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Northeastern University Information Services](https://appshunter.io/developer/455790172) | [EVOCO LABS CO., LTD.](https://appshunter.io/developer/1498298529) |

## What reviewers say

### P.A.R.T.

[App page](https://appshunter.io/ios/app/part/id1126512332)

This platform allows researchers to design, configure, and test cognitive and auditory assessment protocols. It provides a development environment for refining assessment batteries before use in human subject research.

**Highlights:** Design environment for 100+ assessment types, Psychoacoustical, neuropsychological, executive function tests, Adaptive algorithm configuration, Customizable assessment flows, Detailed data logging, Protocol validation tools

**Features:** macOS Compatibility

**In-app purchases:** none


### Herz Hz

[App page](https://appshunter.io/ios/app/herz-hz/id6746525562)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is P.A.R.T. free?

P.A.R.T. is free to download, with no in-app purchases.

### Is Herz Hz free?

Herz Hz is free to download, with no in-app purchases.

### Do P.A.R.T. or Herz Hz have ads?

Neither P.A.R.T. nor Herz Hz shows ads.

### Which is updated more often, P.A.R.T. or Herz Hz?

P.A.R.T. ships an update every 2 months, and Herz Hz every 9 days. Most recently, P.A.R.T. was updated on October 24, 2026 and Herz Hz on October 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.*