# NDS6831 vs HPX

The clearest difference is iOS requirement: NDS6831 at 9.0 against HPX's 12.0. 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.

NDS6831 ships an update every 3 weeks, HPX every 6 weeks. The most recent releases landed on October 13, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | NDS6831 | HPX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 36 MB | 41 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) | [华菊 尹](https://appshunter.io/developer/1856257959) |

## What reviewers say

### NDS6831

[App page](https://appshunter.io/ios/app/nds6831/id1460128239)

This application connects to Nakamichi Digital Sound Processors, allowing users to control and customize their audio settings. It provides an interface for adjusting various sound parameters to optimize the listening experience.

**Highlights:** Connects to Nakamichi DSPs, Control audio settings, Customize sound parameters, Optimize listening experience

**Features:** macOS Compatibility

**In-app purchases:** none


### HPX

[App page](https://appshunter.io/ios/app/hpx/id6757374709)

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

**In-app purchases:** none


## Frequently asked questions

### Is NDS6831 free?

NDS6831 is free to download, with no in-app purchases.

### Is HPX free?

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

### Do NDS6831 or HPX have ads?

Neither NDS6831 nor HPX shows ads.

### Which is updated more often, NDS6831 or HPX?

NDS6831 ships an update every 3 weeks, and HPX every 6 weeks. Most recently, NDS6831 was updated on October 13, 2026 and HPX on October 18, 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.*