# ddtctmcc vs GSDSP Quantum Filter

The clearest difference is price: ddtctmcc at $5.99 against GSDSP Quantum Filter's $14.99. ddtctmcc also leads on update cadence (daily vs every 5 weeks) and iOS requirement (9.0 vs 12.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

ddtctmcc costs $5.99 and GSDSP Quantum Filter $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for ddtctmcc against 5.0 for GSDSP Quantum Filter. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

ddtctmcc ships an update daily, GSDSP Quantum Filter every 5 weeks. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ddtctmcc | GSDSP Quantum Filter |
| --- | --- | --- |
| Price | **$5.99** | $14.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/ddtctmcc/id6453841257/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 weeks |
| Monetization | Paid | Paid |
| Size | 7 MB | 77 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Nadzharov](https://appshunter.io/developer/729549192) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### ddtctmcc

[App page](https://appshunter.io/ios/app/ddtctmcc/id6453841257)

This app translates touch gestures into MIDI Control Change messages. It offers two recording modes, scene management for storing settings, and extended timing controls for loops. It can run standalone or as an AUv3 plugin.

**Highlights:** 2D touch area for MIDI values, Loop and Once gesture recording, Scene support with transition times, Extended timing and host tempo sync, Multiple output settings per instance

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

**In-app purchases:** none


### GSDSP Quantum Filter

[App page](https://appshunter.io/ios/app/gsdsp-quantum-filter/id6498711920)

This audio effect plugin offers analog-modeled filters with flexible routing and dynamic modulation for creative sound design. It provides extensive control over tone shaping and complex filtering with various filter types and configurations.

**Highlights:** Analog-modelled filters, 11 filter modes, Series and parallel routing, Dynamic modulation support, Stereo and dual mono modes, MIDI control integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ddtctmcc free?

ddtctmcc costs $5.99, with no in-app purchases.

### Is GSDSP Quantum Filter free?

GSDSP Quantum Filter costs $14.99, with no in-app purchases.

### Which has better reviews, ddtctmcc or GSDSP Quantum Filter?

ddtctmcc and GSDSP Quantum Filter are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do ddtctmcc or GSDSP Quantum Filter have ads?

Neither ddtctmcc nor GSDSP Quantum Filter shows ads.

### Which is updated more often, ddtctmcc or GSDSP Quantum Filter?

ddtctmcc ships an update daily, and GSDSP Quantum Filter every 5 weeks. Most recently, ddtctmcc was updated on September 28, 2026 and GSDSP Quantum Filter on September 22, 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.*