# GZDSP 4 vs ESX Toolkit

The clearest difference is update cadence: GZDSP 4 at every 3 weeks against ESX Toolkit's every 5 months. GZDSP 4 also leads on iOS requirement (8.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GZDSP 4 ships an update every 3 weeks, ESX Toolkit every 5 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GZDSP 4 | ESX Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | — | Free |
| Size | 48 MB | 17 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Ground Zero GmbH](https://appshunter.io/developer/1446274884) | [Audio Design](https://appshunter.io/developer/1579008816) |

## What reviewers say

### GZDSP 4

[App page](https://appshunter.io/ios/app/gzdsp-4-8x-control/id1446274885)

**Features:** macOS Compatibility

**In-app purchases:** none


### ESX Toolkit

[App page](https://appshunter.io/ios/app/esx-toolkit/id1579008484)

Control DSP tuning devices remotely via Bluetooth. Adjust EQ settings and access powerful remote control functions for audio customization.

**Highlights:** Bluetooth device connection, DSP tuning control, EQ adjustment, Remote control functions, Device search

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GZDSP 4 free?

GZDSP 4 is free to download, with no in-app purchases.

### Is ESX Toolkit free?

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

### Do GZDSP 4 or ESX Toolkit have ads?

Neither GZDSP 4 nor ESX Toolkit shows ads.

### Which is updated more often, GZDSP 4 or ESX Toolkit?

GZDSP 4 ships an update every 3 weeks, and ESX Toolkit every 5 months. Most recently, GZDSP 4 was updated on October 26, 2026 and ESX Toolkit on October 24, 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.*