# ddtctmcc vs GSDSP Quantum Delay

The clearest difference is price: ddtctmcc at Free 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 review sentiment (100% vs 80%). On ratings volume, ads, in-app purchases and device support there is nothing between them.

ddtctmcc is free to download; GSDSP Quantum Delay costs $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. Both are backed by a comparable volume of ratings — 7 and 17 respectively. Written reviews complicate that: 80% of ddtctmcc's written reviews are positive against 100% of GSDSP Quantum Delay's, so the app with the better star average is not the one people write more warmly about.

ddtctmcc ships an update daily, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on October 2, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ddtctmcc | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/ddtctmcc-ff/id6460858922/reviews)** | [4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews) |
| Number of ratings | 7 | **17** |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 weeks |
| Monetization | **Free** | Paid |
| Size | 6 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-ff/id6460858922)

This free music app translates touch gestures into MIDI Control Change messages. It offers a 2D touch area to control three MIDI values and two gesture recording modes: infinite looping or one-time playback triggered by buttons.

**Highlights:** 2D touch area for MIDI control, X, Y, and Touch On/Off MIDI values, Looping gesture recording, One-time gesture playback, Background operation, AUv3 support

**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 is free to download, 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 7 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 October 2, 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.*