JAX SPECTRO Series vs GSDSP Quantum Delay Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAX SPECTRO Series
This application provides real-time spectral analysis of audio streams, dividing them into 128 chromatically mapped frequency bands across the MIDI note range. It visualizes these bands in a musical semitone scale, offering detailed frequency analysis for music production and study.
- Real-time spectral analysis
- 128 frequency bands
- Chromatically mapped bands
- Musical semitone scale visualization
- MIDI note range coverage
- Universal build for Apple devices
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Note: AudioUnits (AUv3) require a supporting host application to perform. JAX SPECTRO SERIES AudioUnits (AUv3) are special spectral processors, which divide the audio stream in 128 frequency bands. These bands are chromatically mapped and visualized consequently in the scale of musical semitones across the entire MIDI notes range. These tools are useful for frequency analysis in a musical context. This build is truly 'universal', meaning, unit is available for: - MacOS (Apple Silicon) - iOS (iPhone) - iPadOS (iPads) - visionOS (Apple Vision Pro) Please note, that the MacOS Catalyst (Intel) versions may be sold separately, as the AppStore does not allow to bundle none-silicon apps.
GSDSP Quantum Delay Lite
This audio effect plugin offers vintage-inspired stereo delay with deep modulation, flexible filtering, and creative timing options. It allows for precise control over echoes, from warm analog sounds to shimmering textures, and integrates an advanced modulation system for unique sound design.
- Vintage-inspired stereo delay
- Deep modulation system
- Flexible filtering
- Creative timing controls
- Precise feedback control
- Crossfeed and Over-Feedback options
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A vintage-inspired delay supercharged with deep modulation, flexible filtering, and creative timing that pushes echoes into new dimensions. This is the free Lite version of Quantum Delay. Enjoy it? Go pro with the full version. Classic Delay, Reinvented Quantum Delay Lite 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 a lowpass filter 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. Modulation Without Limits Quantum Delay Lite integrates our advanced modulation system, letting you modulate nearly anything: delay time, filters, feedback parameters, 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 Lite 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: GSDSP Quantum Delay Lite at Free against JAX SPECTRO Series's $5.99. GSDSP Quantum Delay Lite also leads on rating (5.0 vs 3.0). On ratings volume, ads, in-app purchases and device support 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
GSDSP Quantum Delay Lite is free to download; JAX SPECTRO Series costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GSDSP Quantum Delay Lite holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
| Parameter | JAX SPECTRO Series | GSDSP Quantum Delay Lite |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 3.0 (2 ratings) | 5.0 (4 ratings) — better |
| Number of ratings | 2 | 4 — better |
| Update frequency | — | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Guell | Gustav Scholda |
Customer experience
JAX SPECTRO Series
GSDSP Quantum Delay Lite
In-app purchases
JAX SPECTRO Series
No in-app purchases
GSDSP Quantum Delay Lite
No in-app purchases
Questions
Is JAX SPECTRO Series free?
Is GSDSP Quantum Delay Lite free?
Which has better reviews, JAX SPECTRO Series or GSDSP Quantum Delay Lite?
Do JAX SPECTRO Series or GSDSP Quantum Delay Lite have ads?
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