# Starkey Relax vs P.A.R.T.

The clearest difference is rating: P.A.R.T. at 4.6 against Starkey Relax's 4.0. P.A.R.T. also leads on update cadence (every 2 months vs every 7 months). Starkey Relax's advantage is ratings volume (28 vs 5) and iOS requirement (9.0 vs 12.0). On price, ads, in-app purchases and monetization model 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. holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Starkey Relax has 28 ratings behind it against 5, so its average is the more settled of the two.

Starkey Relax ships an update every 7 months, P.A.R.T. every 2 months. The most recent releases landed on July 7, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Starkey Relax | P.A.R.T. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (28 ratings)](https://appshunter.io/ios/app/starkey-relax/id966601084/reviews) | **[4.6 (5 ratings)](https://appshunter.io/ios/app/part/id1126512332/reviews)** |
| Number of ratings | **28** | 5 |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 83 MB | 181 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Starkey Laboratories, Inc.](https://appshunter.io/developer/336622271) | [Northeastern University](https://appshunter.io/developer/455790172) |

## What reviewers say

### Starkey Relax

[App page](https://appshunter.io/ios/app/starkey-relax/id966601084)

This app offers personalized sound therapy to help manage tinnitus. Customize 12 relief sounds with adjustable volume and frequency, paired with soothing images, for a tailored experience. Stream sounds directly to compatible hearing aids.

**Highlights:** Customizable relief sounds, Adjustable volume and frequency, Soothing image pairing, Sound therapy protocol integration, Direct streaming to hearing aids, Informational resource

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Starkey Relax free?

Starkey Relax is free to download, with no in-app purchases.

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

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

### Which has better reviews, Starkey Relax or P.A.R.T.?

P.A.R.T. is rated higher. Starkey Relax averages 4.0 out of 5 from 28 ratings, while P.A.R.T. averages 4.6 from 5 ratings.

### Do Starkey Relax or P.A.R.T. have ads?

Neither Starkey Relax nor P.A.R.T. shows ads.

### Which is updated more often, Starkey Relax or P.A.R.T.?

Starkey Relax ships an update every 7 months, and P.A.R.T. every 2 months. Most recently, Starkey Relax was updated on July 7, 2026 and P.A.R.T. on June 4, 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.*