BrainBud vs GSDSP Quantum Delay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BrainBud
This app acts as a central controller for other music creation applications, allowing you to manage keys and scales simultaneously. It integrates with a variety of Bud apps via MIDI, enabling synchronized changes and broadcasting of musical parameters. Experiment with randomization and automate settings through its AUv3 plugin.
- Centralized key and scale control
- MIDI out to multiple Bud apps
- Budcast for parameter broadcasting
- Randomize musical parameters
- AUv3 plugin for automation
- Requires other Bud apps to function
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BrainBud controls the keys and scales of the Bud apps all at once. Connect BrainBud’s MIDI out to MIDI inputs of: - SnakeBud - PolyBud - MelodyBud - ShiftBud - ScaleBud 2 - In Theory - Textquencer - Binarhythmic - Auto Bass - BounceBud - MuseBud - Kebarp - FuncBud - Note to Be You can also broadcast the current key/scale to the newly connected apps with Budcast button. If you’d like to experiment, you can try the randomise button. With the AUv3 plugin, you can change the BrainBud's parameters or even automate them with AU parameters. For using the AUv3 plugin make sure you have an AUv3 host app such as AUM, Cubasis, Nanostudio, apeMatrix. BrainBud is a MIDI based app and requires other Bud apps present in order to work right. If you don't have any other Bud apps mentioned above, you can't make a use of BrainBud. BrainBud doesn't produce any kind of sound on its own.
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: BrainBud at $2.99 against GSDSP Quantum Delay's $14.99. BrainBud also leads on rating (5.0 vs 4.8). GSDSP Quantum Delay's advantage is ratings volume (17 vs 2). On review sentiment, update cadence, 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
BrainBud costs $2.99 and GSDSP Quantum Delay $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BrainBud holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: GSDSP Quantum Delay has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
BrainBud ships an update every 2 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.
| Parameter | BrainBud | GSDSP Quantum Delay |
|---|---|---|
| Price | $2.99 — better | $14.99 |
| Rating | 5.0 (2 ratings) — better | 4.8 (17 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 17 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 15 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Cem Olcay | Gustav Scholda |
Customer experience
BrainBud
GSDSP Quantum Delay
In-app purchases
BrainBud
No in-app purchases
GSDSP Quantum Delay
No in-app purchases








