# Addictive Pro vs GSDSP Quantum Delay

The clearest difference is price: Addictive Pro at $5.99 against GSDSP Quantum Delay's $14.99. Addictive Pro also leads on update cadence (every 2 weeks vs every 5 weeks). GSDSP Quantum Delay's advantage is review sentiment (100% vs 75%) and device support (3 vs 1). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Addictive Pro costs $5.99 and GSDSP Quantum Delay $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Addictive Pro against 4.8 for GSDSP Quantum Delay. Both are backed by a comparable volume of ratings — 18 and 17 respectively. Written reviews are what separate them: 75% of Addictive Pro's written reviews are positive against 100% of GSDSP Quantum Delay's.

Addictive Pro ships an update every 2 weeks, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Addictive Pro | GSDSP Quantum Delay |
| --- | --- | --- |
| Price | **$5.99** | $14.99 |
| Rating | [4.7 (18 ratings)](https://appshunter.io/ios/app/addictive-pro/id1130398188/reviews) | **[4.8 (17 ratings)](https://appshunter.io/ios/app/gsdsp-quantum-delay/id6469328297/reviews)** |
| Number of ratings | **18** | 17 |
| Positive reviews | 75.0% 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 | 58 MB | 94 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### Addictive Pro

[App page](https://appshunter.io/ios/app/addictive-pro/id1130398188)

This app offers a powerful hybrid synthesis engine for creating complex and dynamic sounds. Explore wavetable, noise, virtual analog, and FM synthesis with extensive modulation and effects. It includes a polyrhythm arpeggiator and real-time control options for musical inspiration and sound design.

**Highlights:** Hybrid synthesis engine, Wavetable spectrum synthesis, Virtual Analog synthesis, Polyrhythm Arpeggiator, Real-time parameter control, Studio-standard effects section, AudioUnit Instrument 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 Addictive Pro free?

Addictive Pro costs $5.99, 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, Addictive Pro or GSDSP Quantum Delay?

GSDSP Quantum Delay is rated higher. Addictive Pro averages 4.7 out of 5 from 18 ratings, while GSDSP Quantum Delay averages 4.8 from 17 ratings.

### Do Addictive Pro or GSDSP Quantum Delay have ads?

Neither Addictive Pro nor GSDSP Quantum Delay shows ads.

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

Addictive Pro ships an update every 2 weeks, and GSDSP Quantum Delay every 5 weeks. Most recently, Addictive Pro was updated on October 13, 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.*