Masher AU vs GSDSP Quantum Delay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Masher AU
This audio plug-in forcibly syncs one audio channel's base frequency to another, creating a distinct, gritty sound. Its unique interface features a potato masher to visualize the sync applied to your signals.
- Hard sync audio channels
- Create gritty audio textures
- Unique visual interface
- AUv3 compatibility
- Intuitive design
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Masher AU is a straightforward and robust AUv3 plug-in enhancing your audio projects in your favorite AUv3 host with hard syncing capabilities. Masher AU brings to you the functionality of forcibly syncing one audio channel's base frequency onto another, resulting in a distinct, gritty audio output. Built for simplicity and ease of use, Masher AU’s GUI boasts an unconventional twist. The display features a potato masher, whose wavy wire visually represents the sync applied to your signals. A quirky way to visualize your audio manipulation while keeping things straightforward and intuitive! Key Features: Hard Sync Functionality: Masher AU lets you hard sync one audio channel to another, allowing for the creation of unique, rough audio textures. Gritty Sound Output: Embrace the gritty, aggressive sound produced by this sync effect, adding an edge to your audio. Creative GUI Design: Featuring a potato masher whose wavy wire visually represents the sync applied to the signals. AUv3 Compatibility: Fully compatible with AUv3-compatible iOS apps, enabling a smooth and seamless production experience. Note that you need an AUv3 host to use this app in a meaningful way (as a stand-alone app, it only processes the microphone input).
GSDSP Quantum Delay
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.
- 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)
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A vintage-inspired delay supercharged with deep modulation, flexible filtering, and creative timing that pushes echoes into new dimensions. Classic Delay, Reinvented Quantum Delay takes the charm of a vintage stereo delay and fuses it with our next-level modulation system. Switch between the warm character of Tape mode and the pristine clarity of Fade mode, lock to BPM (including 5-tuplets) or dial in precise times in milliseconds. Use the Fine control for subtle push-and-pull micro-timing — or modulate your delay lines in ways traditional delays could only dream of. Sculpted Echoes Shape your repeats with switchable lowpass, highpass, and bandpass filters placed directly in the feedback path. Add modulation to create evolving tones, gentle movement, or drifting, frequency-shifting echoes. From warm analog-style rolls to shimmering, swirling textures, it’s all there. Feedback with Precision Control your delay tail behavior using either traditional % feedback or our modern dB-per-second decay system — ideal for predictable, musical decay even when the feedback path becomes complex. Enable Crossfeed for classic ping-pong stereo bounce, or push into Over-Feedback to create dense, self-building echoes that drift toward infinity. Stereo or Dual Mono Every section of Quantum Delay — delay, filter, and feedback — can switch between stereo and dual mono modes. Create tight, controlled stereo images or break them apart for wide, offset, unpredictable spaces. Dual mono modulation unlocks complex stereo interplay and beautifully asymmetric echoes. Modulation Without Limits Quantum Delay integrates our advanced modulation system, letting you modulate nearly anything: delay time, filters, feedback parameters, stereo controls, and more. Use LFOs, Random Generators, 2D modulators, Envelope Followers, Macros, and even chaotic systems to push your echoes far beyond traditional delay behavior. Or use our parameter randomisation feature to explore the plugin’s sound at random. Quantum Delay is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products
Screenshots
Verdict
The clearest difference is price: Masher AU at $2.99 against GSDSP Quantum Delay's $14.99. GSDSP Quantum Delay's advantage is rating (4.8 vs 4.1). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Masher AU costs $2.99 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 4.1. Both are backed by a comparable volume of ratings — 7 and 17 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | Masher AU | GSDSP Quantum Delay |
|---|---|---|
| Price | $2.99 — better | $14.99 |
| Rating | 4.1 (7 ratings) | 4.8 (17 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 | 17 — better |
| Update frequency | — | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 7 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Fritz Menzer | Gustav Scholda |
Customer experience
Masher AU
GSDSP Quantum Delay
In-app purchases
Masher AU
No in-app purchases
GSDSP Quantum Delay
No in-app purchases








