# TGX vs GSDSP Quantum Delay

The clearest difference is price: GSDSP Quantum Delay at $14.99 against TGX's $19.99. GSDSP Quantum Delay also leads on rating (4.8 vs 4.5) and ratings volume (17 vs 4). On in-app purchases, monetization model and iOS requirement there is nothing between them.

TGX costs $19.99 and GSDSP Quantum Delay $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GSDSP Quantum Delay holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 4 and 17 respectively.

## The numbers

| Metric | TGX | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/tgx-9977-sample-library/id6467767793/reviews) | **[4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews)** |
| Number of ratings | 4 | **17** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 5 weeks |
| Monetization | Paid | Paid |
| Size | 317 MB | 94 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MIDIculous LLC](https://appshunter.io/developer/579058990) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### TGX

[App page](https://appshunter.io/ios/app/tgx-9977-sample-library/id6467767793)

This app recreates a legendary synthesizer's sound with an extensive 18GB library. It offers standalone and AUv3 compatibility, allowing users to access factory presets, raw waveforms, and drum kits for professional music production.

**Highlights:** Virtual sample library of Yamaha SY99/77, 18GB lossless sound library, Includes all factory presets and raw waveforms, Standalone and AUv3 compatible, Advanced FM Technology (AFM), High-quality A/D converters

**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 TGX free?

TGX costs $19.99, 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, TGX or GSDSP Quantum Delay?

GSDSP Quantum Delay is rated higher. TGX averages 4.5 out of 5 from 4 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.

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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.*