# AX vs AUDIO DSP Control

The clearest difference is review sentiment: AUDIO DSP Control at 63% against AX's 0%. AX's advantage is iOS requirement (12.1 vs 15.6). 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.

AX ships an update every 2 months, AUDIO DSP Control every 3 months. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | AX | AUDIO DSP Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.2 (5 ratings)](https://appshunter.io/ios/app/ax-dsp-xl/id1495854432/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | **62.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 10 MB | 12 MB |
| Requires iOS | **12.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Metra Electronics Corp.](https://appshunter.io/developer/1133973919) | [长猛 周](https://appshunter.io/developer/1689008478) |

## What reviewers say

### AX

[App page](https://appshunter.io/ios/app/ax-dsp-xl/id1495854432)

Enhance your car's audio system with this digital signal processor. It offers an all-in-one solution for various audio setups, allowing for improved sound quality and subwoofer integration while preserving factory features. Control settings easily via a smartphone app.

**Highlights:** Digital Signal Processor, Subwoofer integration, Preserves OE features, Bluetooth smartphone control, Vehicle-specific T-Harnesses (sold separately), All-in-one solution

**Features:** macOS Compatibility

**In-app purchases:** none


### AUDIO DSP Control

[App page](https://appshunter.io/ios/app/audio-dsp-control/id6450451317)

Control your car's audio system directly from your mobile device. View player information, manage music playback, and adjust sound effects with an intuitive interface. Offers convenient one-button switching and real-time positioning.

**Highlights:** Car player button control, View car player function information, Intuitive radio interface, USB/SD player with ID3 info, Bluetooth music playback, One-button car player switch, Sound effect adjustment, Real-time positioning

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

**In-app purchases:** none


## Frequently asked questions

### Is AX free?

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

### Is AUDIO DSP Control free?

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

### Do AX or AUDIO DSP Control have ads?

Neither AX nor AUDIO DSP Control shows ads.

### Which is updated more often, AX or AUDIO DSP Control?

AX ships an update every 2 months, and AUDIO DSP Control every 3 months. Most recently, AX was updated on October 3, 2026 and AUDIO DSP Control on October 9, 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.*