# DSP vs PBX DSP8

The clearest difference is update cadence: PBX DSP8 at every 4 months against DSP's every 18 months. DSP's advantage is device support (3 vs 1) and iOS requirement (8.3 vs 26.0). 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.

DSP ships an update every 18 months, PBX DSP8 every 4 months. The most recent releases landed on September 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | DSP | PBX DSP8 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/pbx-dsp8/id1638281227/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 45 MB | 39 MB |
| Requires iOS | **8.3** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [AllDSP GmbH & Co. KG.](https://appshunter.io/developer/874361428) | [PowerBass USA,INC](https://appshunter.io/developer/1638281229) |

## What reviewers say

### DSP

[App page](https://appshunter.io/ios/app/dsp-control/id874361425)

**Features:** macOS Compatibility

**In-app purchases:** none


### PBX DSP8

[App page](https://appshunter.io/ios/app/pbx-dsp8/id1638281227)

This application provides full control over an 8-channel audio processor for fine-tuning car sound systems. It features a 32-band equalizer, crossover network, and time alignment for a customized listening experience. Hardware is required and sold separately.

**Highlights:** Control up to 8 input and 8 output channels, 32-Band Equalizer, Crossover Network, Time Alignment, Customizable in-car audio experience, Fully integrated app control

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

**In-app purchases:** none


## Frequently asked questions

### Is DSP free?

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

### Is PBX DSP8 free?

PBX DSP8 is free to download, with no in-app purchases.

### Do DSP or PBX DSP8 have ads?

Neither DSP nor PBX DSP8 shows ads.

### Which is updated more often, DSP or PBX DSP8?

DSP ships an update every 18 months, and PBX DSP8 every 4 months. Most recently, DSP was updated on September 25, 2026 and PBX DSP8 on October 7, 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.*