# VAMono vs GSDSP Quantum Delay

The clearest difference is review sentiment: GSDSP Quantum Delay at 100% against VAMono's 83%. GSDSP Quantum Delay also leads on rating (4.8 vs 4.6) and iOS requirement (12.0 vs 14.2). VAMono'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.

VAMono 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 4.6. Both are backed by a comparable volume of ratings — 12 and 17 respectively. Written reviews point the same way: 83% of VAMono's written reviews are positive against 100% of GSDSP Quantum Delay's.

VAMono ships an update every 2 weeks, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | VAMono | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | [4.6 (12 ratings)](https://appshunter.io/ios/app/vamono/id1539829401/reviews) | **[4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews)** |
| Number of ratings | 12 | **17** |
| Positive reviews | 83.3% 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 | 21 MB | 94 MB |
| Requires iOS | 14.2 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Togawa](https://appshunter.io/developer/1474193056) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### VAMono

[App page](https://appshunter.io/ios/app/vamono/id1539829401)

This app is a virtual analog monophonic synthesizer inspired by classic 80s synths. It features two oscillators, a versatile filter, and built-in effects like distortion and delay. A 64-step sequencer allows for note and parameter automation.

**Highlights:** Virtual analog monophonic synthesizer, Two oscillators with extensive modulation, 24 dB lowpass filter, Distortion and delay effects, 64-step sequencer for notes and parameters, AudioUnit Extension (AUv3) and Stand Alone modes, Ableton Link and Bluetooth MIDI support

**Features:** 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 VAMono free?

VAMono 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, VAMono or GSDSP Quantum Delay?

GSDSP Quantum Delay is rated higher. VAMono averages 4.6 out of 5 from 12 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.

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

Neither VAMono nor GSDSP Quantum Delay shows ads.

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

VAMono ships an update every 2 weeks, and GSDSP Quantum Delay every 5 weeks. Most recently, VAMono was updated on September 20, 2026 and GSDSP Quantum Delay on September 22, 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.*