Comparison

GZDSP 4 vs ESX Toolkit

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

GZDSP 4

Features
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This app enables you to control and to adjust the setup of the GROUND ZERO GZDSP 4-8X and GZDSP 4-8XII signal processor when connected to the GROUND ZERO GZDSP BT-STICK or GZDSP BTS 4-8XII streaming device. A detailed user manual can be downloaded from the GROUND ZERO web page: https://ground-zero-audio.com/ The factory set password for "Advanced Settings" is 666666 You may change the password any time Requirements for using the app: Installed and powered signal processor unit GROUND ZERO GZDSP 4-8X or XII with connected GROUND ZERO GZDSP BT-STICK or GZDSP BTS 4-8XII streaming interface. Established wireless connection between your iOS mobile device and the GZDSP BT-STICK or GZDSP BTS 4-8XII (check the devicesΒ΄s ownerΒ΄s manual for further information about creating a wireless connection). After adding the app to your iOS device and having connected the GZDSP BT-STICK or GZDSP 4-8XII in wireless mode, youΒ΄ll be able to control the main features of the GZDSP 4-8X or XII - Adjust the main volume - Mute/unmute the main volume - Select a preset (out of the 6 presets from the deviceΒ΄s memory) Furthermore, you will have access to the advanced settings of the GZDSP 4-8X signal processor: (factory set password 666666) - Input and output selection and mixer - High pass and low pass crossover setting - Channel link configuration - Channel phase control - 10-band parametric equalizer adjustment - Time alignment setup in ms/cm/inches - Reset function - Save and load presets to/from the deviceΒ΄s memory

About

ESX Toolkit

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
Read full description

This App is a special application for controlling DSP tuning devices. You can search and connect devices through Bluetooth to achieve EQ adjustment and other powerful remote control functions.

Screenshots

GZDSP 44 screens
ESX Toolkit3 screens

Verdict

The call

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.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences Β· 6 level
GZDSP 4 versus ESX Toolkit: the parameters behind the verdict, then further details
ParameterGZDSP 4ESX Toolkit
PriceFreeFree
Positive reviewsβ€”50.0% of reviews
Update frequencyEvery 3 weeks β€” betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
Monetizationβ€”Free
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS8.0 β€” better12.0
Further details β€” not scored
Size48 MB17 MB
Age rating4+9+
DeveloperGround Zero GmbHAudio Design

In-app purchases

None

GZDSP 4

No in-app purchases

None

ESX Toolkit

No in-app purchases

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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