# ddtctmcc vs GSDSP Quantum Delay

The clearest difference is price: ddtctmcc at $5.99 against GSDSP Quantum Delay's $14.99. ddtctmcc also leads on update cadence (daily vs every 5 weeks) and rating (5.0 vs 4.8). GSDSP Quantum Delay's advantage is ratings volume (17 vs 3). On ads, in-app purchases, monetization model and device support there is nothing between them.

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

ddtctmcc holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: GSDSP Quantum Delay has 17 ratings behind it against 3, so its average is the more settled of the two.

ddtctmcc ships an update daily, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ddtctmcc | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | **$5.99** | $14.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ddtctmcc/id6453841257/reviews)** | [4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews) |
| Number of ratings | 3 | **17** |
| 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 | 94 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 Delay

[App page](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297)

This app offers a vintage-inspired stereo delay effect with advanced modulation, flexible filtering, and precise timing controls. It allows users to sculpt unique echo textures, from warm analog sounds to complex, evolving soundscapes.

**Highlights:** Vintage-inspired stereo delay, Deep modulation system, Flexible filtering (LPF, HPF, BPF), Precise timing controls (BPM, ms), Switchable stereo/dual mono modes, Advanced modulation sources (LFO, Random, Envelope)

**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 Delay free?

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

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

ddtctmcc is rated higher. ddtctmcc averages 5.0 out of 5 from 3 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.

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

Neither ddtctmcc nor GSDSP Quantum Delay shows ads.

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

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