# Lines vs GSDSP Quantum Delay

The clearest difference is update cadence: GSDSP Quantum Delay at every 5 weeks against Lines's every 13 months. GSDSP Quantum Delay also leads on price ($14.99 vs $19.99). Lines's advantage is rating (5.0 vs 4.8). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

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

Lines holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 11 and 17 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Lines ships an update every 13 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on August 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Lines | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/lines-feedback-multieffect/id6461267498/reviews)** | [4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews) |
| Number of ratings | 11 | **17** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 29 MB | 94 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Lines

[App page](https://appshunter.io/ios/app/lines-feedback-multieffect/id6461267498)

This audio effect plugin transforms any signal into a wide spectrum of sounds, from lo-fi to distortion and feedback. It can also function as an experimental synthesizer, creating rhythms and soundscapes even without input.

**Highlights:** Creative signal mangling, Experimental synthesizer, Feedback-based sound design, Wide range of audio effects, Rhythm and soundscape generation

**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 Lines free?

Lines 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, Lines or GSDSP Quantum Delay?

Lines is rated higher. Lines averages 5.0 out of 5 from 11 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.

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

Neither Lines nor GSDSP Quantum Delay shows ads.

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

Lines ships an update every 13 months, and GSDSP Quantum Delay every 5 weeks. Most recently, Lines was updated on August 29, 2026 and GSDSP Quantum Delay on September 22, 2026.

---

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