# GRDelay — Granular Random Delay AUv3

> Randomized granular delay audio effect plugin for AUv3 hosts. (iPhone/iPad app by Rob Jackson.)

- Source: https://appshunter.io/ios/app/grdelay/id6757957948 (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 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Released: 2026-01-22
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/grdelay/id6757957948/reviews.md

## What is GRDelay?

GRDelay - Granular Random Delay Plugin (AUv3)

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

Overview - What's a Granular Random Delay?

GRDelay is a randomised delay effect that uses a similar approach to granular synthesis to generate sound. In GRDelay, up to 16 "grains" of stereo sound are created in realtime from delayed copies of the input audio, with control over the grain shape and delay time. There are also options to pitch-shift grains up an octave, and cascade the output from one grain into another. Shape, delay time and pitch-shifting can all be randomised to create some really unusual effects and textures. While GRDelay can produce sounds similar to existing pitch-shifted delays and even shimmer effects, the design is totally original, and to the best of my knowledge, quite sonically unique.

I think GRDelay is really one of those effects you need to hear to believe, so please do check out the reviews and demos online.

Please note, because there's a "whole lot of random going on" in GRDelay, it's not a good choice if you want a delay that can do tempo / clock-sync'd rhythmic delays. Perhaps take a look at PolyDelay which offers tempo sync to host and musical note length delay times.


For more info and support please visit:

www.waverley-instruments.com/robjackson

## Key features

- Granular synthesis-based delay
- Up to 16 stereo grains
- Randomized grain shape and delay time
- Pitch-shifting and cascading grains
- Standalone and AUv3 compatible

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/grdelay/id6757957948/reviews.md

### 5/5 — Instant life for dead sounds.

*2026-01-23*

Got a synth that’s ok but kinda lacking life and movement? This is an easy fix at a bargain price and it sounds awesome. Thanks Rob!

## Frequently asked questions about GRDelay

### What is GRDelay?

GRDelay is an audio effect plugin that functions as a randomized granular delay. It creates unique sound textures by processing delayed copies of input audio into 'grains' with controllable randomization.

### What devices does GRDelay support?

GRDelay is supported on Mac, iPhone, iPad, and iPod. It can run standalone or within any AU compatible host application.

### Is GRDelay suitable for rhythmic delays?

No, GRDelay is not designed for tempo or clock-synced rhythmic delays due to its inherent randomization. For tempo-synced delays, consider an alternative like PolyDelay.

### How much does GRDelay cost?

GRDelay is a paid application, priced at $1.99. There are no in-app purchases or subscriptions required.

### What is the age rating for GRDelay?

GRDelay has an age rating of 4+, making it suitable for a wide range of users.

### When was GRDelay last updated?

GRDelay was last updated on January 22, 2026, with version 1.0.0.

### Does GRDelay have ads?

No, GRDelay does not contain advertisements. It is a paid application with no ads.

### What makes GRDelay sonically unique?

GRDelay's unique sound comes from its original design, which uses granular synthesis principles to create randomized delay effects. It can produce textures similar to pitch-shifted delays and shimmer effects, but with a distinct sonic character.

## Version history (last 1 release)

### 1.0.0 — 2026-01-22

No release notes.

## 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 2026-08-20.*