# DD-21 DiodeDistortion — AUv3 AudioUnit v3

> AUv3 distortion, fuzz, and overdrive effect plugin for iPad. (iPhone/iPad app by Paul Betowski.)

- Source: https://appshunter.io/ios/app/dd-21-diodedistortion/id1552444415 (this page in markdown: same URL + `.md`)
- Developer: [Paul Betowski](https://appshunter.io/developer/538476580)
- Category: Music, Music
- Price: $2.99
- Rating: 4.20/5 from 5 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 73 MB
- Languages: English
- Released: 2021-03-04
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/dd-21-diodedistortion/id1552444415/reviews.md

## What is DD?

This is an AudioUnit v3 plugin only. To be used in a 3rd party host app.

DD-21 is a distortion, fuzz, overdrive, saturation AUv3 effect plugin / app extension modelled on the audio distortion introduce in to a circuit by diodes. This type of audio distortion is pleasant to the ear and can be found in numerous audio equipment and countless recordings. 

DD-21 allows the user to dial in a varying range of distortion from subtle analogue warmth to crunchy fuzz. 

Features:
AUv3
Input gain control
Curve slope control
Output volume control
Mix control

## Key features

- AUv3 plugin
- Distortion, fuzz, overdrive, saturation
- Diode-based emulation
- Input gain control
- Curve slope control
- Output volume control
- Mix control

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/dd-21-diodedistortion/id1552444415/reviews.md

### 5/5 — Simple, great sounding distortion

*2021-03-28, version 1.0*

Love a well designed, hyper functional effect. Took me seconds to dial in a great sounding dist/fuzz tone for the drum loop I was working with. Will be reaching for this often. Thank you, Dev

### 1/5 — Not worth braving the orange!

*2021-03-16, version 1.0*

The white font on bright orange is next to impossible to read. Real cute. The sound? Eh. I mean it’s distortion. Developer apparently doesn’t know how to expand the GUI. Doubt I’ll use.

### 5/5 — Sounds great!

*2021-03-09, version 1.0*

Nice job Paul

## Frequently asked questions about DD

### What is DD-21 DiodeDistortion?

DD-21 DiodeDistortion is an AudioUnit v3 plugin that emulates diode-based audio distortion, offering effects from subtle warmth to crunchy fuzz. It is designed to be used within a third-party host application on iPad.

### How much does DD-21 DiodeDistortion cost?

DD-21 DiodeDistortion is a paid application, priced at $2.99. There are no in-app purchases or subscriptions associated with this app.

### Does DD-21 DiodeDistortion have ads?

No, DD-21 DiodeDistortion does not contain advertisements. As a paid application, it offers an ad-free experience.

### What devices is DD-21 DiodeDistortion compatible with?

DD-21 DiodeDistortion is currently supported on iPad devices. It requires a third-party host app that supports AUv3 plugins.

### How often is DD-21 DiodeDistortion updated?

The latest version of DD-21 DiodeDistortion is 1.0.1, which was last updated on April 27, 2021. The initial release date was March 4, 2021.

### What is the age rating for DD-21 DiodeDistortion?

DD-21 DiodeDistortion has an age rating of 4+. This indicates it is suitable for users of all ages.

### What kind of distortion does DD-21 DiodeDistortion offer?

DD-21 DiodeDistortion models the audio distortion introduced by diodes in a circuit. This allows for a range of sounds from subtle analog warmth to crunchy fuzz and saturation.

### Can I use DD-21 DiodeDistortion as a standalone app?

No, DD-21 DiodeDistortion is an AudioUnit v3 plugin only and cannot be used as a standalone application. It requires a compatible third-party host app to function.

## Version history (last 2 releases)

### 1.0.1 — 2021-04-27

Compact view added for screen scalability.

### 1.0 — 2021-03-04

No release notes.

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## More apps by Paul Betowski

- [DUBSTEP / Loops / Keyboard / Drums](https://appshunter.io/ios/app/dubstep-loops-keyboard-drums/id557267838)
- [E Theremin – Electro Theremin](https://appshunter.io/ios/app/e-theremin-electro-theremin/id591471950)
- [SynthDrum Pads](https://appshunter.io/ios/app/synthdrum-pads/id657577819)
- [DNB / Loops / Synth](https://appshunter.io/ios/app/dnb-loops-synth/id670737604)
- [E–Theremin MKII](https://appshunter.io/ios/app/etheremin-mkii/id905407070)
- [WubSynth](https://appshunter.io/ios/app/wubsynth/id1074423582)

All apps by Paul Betowski: https://appshunter.io/developer/538476580

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*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 2026-06-10.*