Comparison

GSDSP Quantum Delay vs sub808

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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

About

sub808

Create powerful sub-bass sounds with this intuitive instrument app. Explore analog-inspired flavors, fine-tune saturation, and sculpt your basslines with versatile envelope and shaper controls. Compatible across devices for seamless production.

Highlights
  • 50 Factory Presets
  • 4 Analog Flavors
  • 8 Saturation Modes
  • Filter Cutoff & Glide
  • Handcrafted Envelope & Shaper
  • Cross-platform Compatibility
Features
Read full description

Sub atomic bass. Anywhere. For any mix. sub808 is the end result of countless hours dialing in and perfecting the perfect 808 - so you don’t have to! Experience the instant power of sub808 in your productions and sculpt your bass into something uniquely yours with our intuitive interface, all within moments. At its core, sub808 includes 50 Factory Presets, featuring 4 distinct flavors: Smooth, Tape, Gritty, and Nasty. Each flavor comes with its own unique analog character, providing excellent starting points for your creativity. Fine-tune these sounds to perfection with 8 Saturation modes, offering precise control over drive and mix levels. Smooth Easy-To-Dial-in Filter Cutoff & Glide Times: Experience enhanced versatility with a filter cutoff featuring both pre and post saturation modes, enabling you to position your filter precisely within the signal chain. Elevate your bass playability with the added convenience of an easily adjustable glide function, facilitating seamless pitch bending between your bass lines for added depth and expression. Handcrafted Envelope and Shaper: We’ve dialed in a customized amp envelope, giving you just what you need: Attack & Release. To complement this further, a specialized transient shaper that can sculpt your sound from a smooth bass pad, to PUNCH kick drum sound with ease. Collaborate, Anytime, Anywhere, on Any Machine: Wether you have a fleet of production machines, or if you collaborate with music makers around the world, we have you covered with cross-platform compatibility & presets to make switching between any machine fast and easy. Features - 50 Factory Presets covering multiple genres - 4 distinct Flavors with baked in Analog goodness - 8 Saturation Modes w/ Drive & Mix Controls - Punch Control for Smooth or Punchy bass - Sound sculpting Glide & Attack/Release Controls - Preset Manager included for saving, editing, and loading different presets - Standalone app and AUv3 included

Screenshots

GSDSP Quantum Delay3 screens
sub8084 screens

Verdict

The call

The clearest difference is review sentiment: GSDSP Quantum Delay at 100% against sub808's 0%. GSDSP Quantum Delay also leads on rating (4.8 vs 4.2) and update cadence (every 5 weeks vs every 6 months). sub808's advantage is price ($9.99 vs $14.99). On ratings volume, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

GSDSP Quantum Delay costs $14.99 and sub808 $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GSDSP Quantum Delay holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 17 and 10 respectively. Written reviews point the same way: 100% of GSDSP Quantum Delay's written reviews are positive against 0% of sub808's.

UpkeepUpdate frequency

GSDSP Quantum Delay ships an update every 5 weeks, sub808 every 6 months. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

Scorecard4 real differences · 6 level
GSDSP Quantum Delay versus sub808: the parameters behind the verdict, then further details
ParameterGSDSP Quantum Delaysub808
Price$14.99$9.99 — better
Rating4.8 (17 ratings) — better4.2 (10 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings17 — better10
Update frequencyEvery 5 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size94 MB150 MB
Age rating4+4+
DeveloperGustav ScholdaOSC Audio

Customer experience

GSDSP Quantum Delay

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

sub808

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

GSDSP Quantum Delay

No in-app purchases

None

sub808

No in-app purchases

Questions

Is GSDSP Quantum Delay free?
GSDSP Quantum Delay costs $14.99, with no in-app purchases.
Is sub808 free?
sub808 costs $9.99, with no in-app purchases.
Which has better reviews, GSDSP Quantum Delay or sub808?
GSDSP Quantum Delay is rated higher. GSDSP Quantum Delay averages 4.8 out of 5 from 17 ratings, while sub808 averages 4.2 from 10 ratings.
Do GSDSP Quantum Delay or sub808 have ads?
Neither GSDSP Quantum Delay nor sub808 shows ads.
Which is updated more often, GSDSP Quantum Delay or sub808?
GSDSP Quantum Delay ships an update every 5 weeks, and sub808 every 6 months. Most recently, GSDSP Quantum Delay was updated on September 22, 2026 and sub808 on September 7, 2026.

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