# GSDSP Quantum Delay vs Outer Space

The clearest difference is update cadence: GSDSP Quantum Delay at every 5 weeks against Outer Space's every 6 months. GSDSP Quantum Delay also leads on price ($14.99 vs $19.99). Outer Space's advantage is rating (5.0 vs 4.8) and chart position (#184 vs unranked). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

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

Outer Space holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 17 and 16 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

GSDSP Quantum Delay ships an update every 5 weeks, Outer Space every 6 months. The most recent releases landed on September 22, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | GSDSP Quantum Delay | Outer Space |
| --- | --- | --- |
| Price | **$14.99** | $19.99 |
| Rating | [4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews) | **[5.0 (16 ratings)](https://appshunter.io/ios/app/outer-space-tape-echo/id6473747074/reviews)** |
| Number of ratings | **17** | 16 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#184** |
| Size | 94 MB | 25 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gustav Scholda](https://appshunter.io/developer/1642323227) | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) |

## 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


### Outer Space

[App page](https://appshunter.io/ios/app/outer-space-tape-echo/id6473747074)

**Currently charting:** #184 Top Paid · Music (US App Store)

This app emulates a vintage tape echo unit from the seventies, featuring three playback heads and two spring reverb tanks. It models various tape responses and analog imperfections for authentic sound.

**Highlights:** Tape echo emulation, Three playback heads, Two spring reverb tanks, Multiple tape responses, Analog imperfection modeling, AUv3 and Standalone support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GSDSP Quantum Delay free?

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

### Is Outer Space free?

Outer Space costs $19.99, with no in-app purchases.

### Which has better reviews, GSDSP Quantum Delay or Outer Space?

Outer Space is rated higher. GSDSP Quantum Delay averages 4.8 out of 5 from 17 ratings, while Outer Space averages 5.0 from 16 ratings.

### Do GSDSP Quantum Delay or Outer Space have ads?

Neither GSDSP Quantum Delay nor Outer Space shows ads.

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

GSDSP Quantum Delay ships an update every 5 weeks, and Outer Space every 6 months. Most recently, GSDSP Quantum Delay was updated on September 22, 2026 and Outer Space on October 1, 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.*