# AuDelay — Golden Ratio Cosmic Delay AUv3

> Golden Ratio cosmic delay AUv3 audio effect plugin for ambient soundscapes. (iPhone/iPad app by Rob Jackson.)

- Source: https://appshunter.io/ios/app/audelay/id6754280371 (this page in markdown: same URL + `.md`)
- Developer: [Rob Jackson](https://appshunter.io/developer/1072346998)
- Category: Music, Entertainment
- Price: $1.99
- Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 13 MB
- Released: 2025-10-23
- Data updated: 2026-08-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/audelay/id6754280371/reviews.md

## What is AuDelay?

AuDelay Golden Ratio Cosmic Delay (AUv3)

AuDelay is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand.

Overview

AuDelay is a delay effect that looks quite simple on the outside, but there's a lot going on inside. The Golden Ratio (*) is used extensively in the DSP code for AuDelay which results in a versatile delay effect that can also sound very unconventional. At its core, AuDelay is a trio of stereo delay lines with variable modulation, panning and lo-fi texture. Shorter delay times can produce an echo effect reminiscent of vintage "oil can" units, but with a maximum base delay time of 16 seconds, "cosmic" ambient soundscape delay effects is where AuDelay really shines.

AuDelay takes its name from the chemical element symbol "Au" for gold, and it just so happens to be an "AU" (Audio Unit) too!

Please note that by design, AuDelay is not well-suited to tempo-sync / rhythmic type delays, so if that's more your thing, please check out PolyDelay as an alternative. AuDelay is also similarly named, but not to be confused with AulDelay either, which is a much more basic analog-flavoured delay.

(*) The Golden Ratio, approximately equal to 1.618, is a special number that has fascinated many scholars going back to Ancient Greek times. It can be found in geometry, architecture, art and even some patterns in nature. 

Controls

Active - Toggles the effect On or Off. This behaves as a "soft switch" or in "trails mode", allowing any delay repeats to ring out when you toggle to the Off state.

Time - Sets the base, or longest delay time. There are three delay lines, each with different pre-delay and base delay times. With Density set to minimum, you have just one line active, so you will typically hear a shorter initial (pre-delay) repeat, then a longer repeat equal to the Time value - very similar to an "oil can delay" with just one head.

Density - This activates the 2nd and 3rd delay lines progressively, so you will hear the output of these delays faded into the wet mix gradually as you increase the Density control. However, when the control gets close to maximum, something else interesting starts to happen...

Density 0% - Only one delay line is active.
Density 0-50% - A second delay line is mixed in gradually, with the two being equal level with the Density control at 50%.
Density 50-75% - A third delay line is mixed in gradually, with all three being equal level with the Density control at 75%.
Density 75-100% - In this range, the output of the lines are fed back into each other, creating an almost reverb-like wash, especially at high Regen settings. 

Regen - Sets the regeneration or feedback for the delay lines. Note that because of the way the Density processing works, AuDelay does not do infinite or "freeze" type effects, but rest assured, the decay time can still be very long when Regen is set to maximum.

Lo-Fi - Applies high and lowpass filtering to the delay repeats along with some gritty drive to emulate a vintage analog delay.

Mod - Applies modulation to the delay. Each delay line is modulated independently and in stereo for a lush chorusing type effect. As you increase Mod, the underlying LFOs start to drift and warble in an unpredictable way. 

Pan - Applies a panning effect to the output of each delay line. The pan rate varies with the delay time and the underlying LFOs will also start to drift as you increase the control.

Mix - Increases the level of the delayed signal. Note that AuDelay does not go 100% "wet", so Mix does not alter the level of your dry signal.

Out - Can be used to adjust the overall output (wet + dry) from AuDelay.

For more info and support please visit:

www.waverley-instruments.com/robjackson

## Key features

- Golden Ratio DSP
- Three stereo delay lines
- Variable modulation
- Lo-fi texture
- Max 16-second delay time
- Soft switch/trails mode

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/audelay/id6754280371/reviews.md

### 5/5 — Wow wow

*2025-11-02*

The Quality is Genius tanks wow

### 5/5 — Been looking for this for a long time!

*2025-10-23*

I’m a big fan of REALLY long delay times, never could find one until I saw this. Thank you so much for making this as well as all your products, crazy good stuff for insanely good prices. I have a bunch of your stuff, all wonderful.

## Frequently asked questions about AuDelay

### What is AuDelay?

AuDelay is an audio effect plugin that functions as a delay, running standalone or within AU-compatible hosts like Logic Pro and GarageBand. It is designed to create versatile and unconventional delay effects, particularly for ambient soundscapes.

### Does AuDelay have ads?

No, AuDelay is an ad-free application. As a paid application, it does not contain any advertisements.

### What devices does AuDelay support?

AuDelay is supported on Mac, iPhone, iPad, and iPod. It leverages the AUv3 format, making it compatible with a wide range of Apple devices.

### How does the Density control work in AuDelay?

The Density control progressively mixes in additional delay lines. From 0% to 75%, it gradually introduces a second and then a third stereo delay line. Above 75%, the lines feed back into each other, creating a wash effect similar to reverb.

### Can AuDelay be used for rhythmic delays?

By design, AuDelay is not well-suited for tempo-sync or rhythmic delays. If you require rhythmic delay effects, the developer recommends checking out their alternative, PolyDelay.

### What is the price of AuDelay?

AuDelay is available for a one-time purchase of $1.99. This price grants you access to the full functionality of the delay effect plugin.

### How often is AuDelay updated?

AuDelay was last updated on October 23, 2025, with version 1.0.2. The developer, Rob Jackson, has released updates to the application.

### What is the age rating for AuDelay?

AuDelay has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.

## Version history (last 1 release)

### 1.0.2 — 2025-10-23

No release notes.

## Apps similar to AuDelay

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [MidiStep](https://appshunter.io/ios/app/midistep/id6680182647) | 4.8 (25) | $14.99 | Music |
| [Surreal Machines Modnetic](https://appshunter.io/ios/app/surreal-machines-modnetic/id6451084427) | 5.0 (11) | $9.99 | Music |
| [XenoVerb - Reverb Suite](https://appshunter.io/ios/app/xenoverb-reverb-suite/id6752956183) | 5.0 (3) | $9.99 | Music |
| [AUBE 2 Audio Unit Box Explorer](https://appshunter.io/ios/app/aube-2-audio-unit-box-explorer/id6740461241) | 4.6 (22) | $19.99 | Music |
| [Copperhead](https://appshunter.io/ios/app/copperhead/id6444207037) | 4.7 (18) | $7.99 | Music |

## More apps by Rob Jackson

- [moodscaper](https://appshunter.io/ios/app/moodscaper/id1088768073)
- [pianoscaper](https://appshunter.io/ios/app/pianoscaper/id1177444402)
- [moodscaper SE](https://appshunter.io/ios/app/moodscaper-se/id1247452905)
- [touchscaper](https://appshunter.io/ios/app/touchscaper/id1250344299)
- [guitarscaper](https://appshunter.io/ios/app/guitarscaper/id1316544251)
- [moodscaper LE](https://appshunter.io/ios/app/moodscaper-le/id1435065372)

All apps by Rob Jackson: https://appshunter.io/developer/1072346998

## Related topics

[grdelay](https://appshunter.io/ios/topics/grdelay)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*