# GSDSP Quantum Delay vs Cab ML

The clearest difference is review sentiment: GSDSP Quantum Delay at 100% against Cab ML's 50%. GSDSP Quantum Delay also leads on rating (4.8 vs 4.0) and in-app purchases (none vs 1). Cab ML's advantage is price (Free vs $14.99) and update cadence (every 3 weeks vs every 5 weeks). On ads and device support there is nothing between them.

Cab ML is free to download; GSDSP Quantum Delay costs $14.99 up front. Cab ML sells 1 one-off in-app purchase. GSDSP Quantum Delay asks for nothing beyond the download.

GSDSP Quantum Delay holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 17 and 4 respectively. Written reviews point the same way: 100% of GSDSP Quantum Delay's written reviews are positive against 50% of Cab ML's.

GSDSP Quantum Delay ships an update every 5 weeks, Cab ML every 3 weeks. The most recent releases landed on September 22, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | GSDSP Quantum Delay | Cab ML |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/cab-ml/id6469339928/reviews) |
| Number of ratings | **17** | 4 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 94 MB | 63 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [Jan Maes](https://appshunter.io/developer/1550506252) |

## What reviewers say

### 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


### Cab ML

[App page](https://appshunter.io/ios/app/cab-ml/id6469339928)

This app generates custom impulse responses using a neural network, allowing interactive sound shaping. It also includes a poweramp and microphone reverb generator for further audio manipulation.

**Highlights:** Neural network impulse response generation, Interactive tag-based sound shaping, Poweramp with multiple options, Microphone reverb generator, AUv3 plugin support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cab ML Activation | $11.99 | one-time |


## Frequently asked questions

### Is GSDSP Quantum Delay free?

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

### Is Cab ML free?

Cab ML is free to download, with in-app purchases available.

### Which has better reviews, GSDSP Quantum Delay or Cab ML?

GSDSP Quantum Delay is rated higher. GSDSP Quantum Delay averages 4.8 out of 5 from 17 ratings, while Cab ML averages 4.0 from 4 ratings.

### Do GSDSP Quantum Delay or Cab ML have ads?

Neither GSDSP Quantum Delay nor Cab ML shows ads.

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

GSDSP Quantum Delay ships an update every 5 weeks, and Cab ML every 3 weeks. Most recently, GSDSP Quantum Delay was updated on September 22, 2026 and Cab ML on August 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*