# Async Sampler vs GSDSP Quantum Delay

The clearest difference is review sentiment: GSDSP Quantum Delay at 100% against Async Sampler's 78%. GSDSP Quantum Delay also leads on rating (4.8 vs 4.5). Async Sampler's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Async Sampler costs $14.99 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 — 18 and 17 respectively. Written reviews point the same way: 78% of Async Sampler's written reviews are positive against 100% of GSDSP Quantum Delay's.

Async Sampler ships an update every 2 weeks, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Async Sampler | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | [4.5 (18 ratings)](https://appshunter.io/ios/app/async-sampler/id6453162970/reviews) | **[4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews)** |
| Number of ratings | **18** | 17 |
| Positive reviews | 77.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Paid | Paid |
| Size | 235 MB | 94 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergei Zhulkov](https://appshunter.io/developer/1698376336) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Async Sampler

[App page](https://appshunter.io/ios/app/async-sampler/id6453162970)

Create captivating sound collages, dynamic textures, and rhythmic patterns with this powerful musical instrument. It offers asynchronous and synchronous playback modes, a versatile LFO, and an effects processor to elevate your sound design.

**Highlights:** Standalone and AUv3 versions, Three independent samplers, Extensive sample library, Upload your own samples, Asynchronous and synchronous playback, Flexible LFO system, Effects processor

**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 Async Sampler free?

Async Sampler costs $14.99, 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, Async Sampler or GSDSP Quantum Delay?

GSDSP Quantum Delay is rated higher. Async Sampler averages 4.5 out of 5 from 18 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.

### Do Async Sampler or GSDSP Quantum Delay have ads?

Neither Async Sampler nor GSDSP Quantum Delay shows ads.

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

Async Sampler ships an update every 2 weeks, and GSDSP Quantum Delay every 5 weeks. Most recently, Async Sampler was updated on September 30, 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.*