# AUDIO DSP Control vs SpecCheck Pro

The clearest difference is in-app purchases: AUDIO DSP Control at none against SpecCheck Pro's 1. AUDIO DSP Control also leads on update cadence (every 3 months vs every 6 months) and iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. SpecCheck Pro sells 1 one-off in-app purchase. AUDIO DSP Control asks for nothing beyond the download.

AUDIO DSP Control ships an update every 3 months, SpecCheck Pro every 6 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AUDIO DSP Control | SpecCheck Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | — |
| Size | 12 MB | 13 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [长猛 周](https://appshunter.io/developer/1689008478) | [Jaime McGauley](https://appshunter.io/developer/1814207689) |

## What reviewers say

### 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


### SpecCheck Pro

[App page](https://appshunter.io/ios/app/speccheck-pro/id6751605124)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpecCheck Premium | $4.99 | one-time |


## Frequently asked questions

### Is AUDIO DSP Control free?

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

### Is SpecCheck Pro free?

SpecCheck Pro is free to download, with in-app purchases available.

### Do AUDIO DSP Control or SpecCheck Pro have ads?

Neither AUDIO DSP Control nor SpecCheck Pro shows ads.

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

AUDIO DSP Control ships an update every 3 months, and SpecCheck Pro every 6 months. Most recently, AUDIO DSP Control was updated on October 9, 2026 and SpecCheck Pro 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.*