Inter-App (IAA) Reverb, Delay, Echo Apps (48)

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Inter-App Audio (IAA) enabled Reverb, Delay, Echo effect app list for iOS

DLYM is a ‘Delay Modulator’ plugin which produces flanger and chorus style effects using Imaginando’s powerful processing technology.

Price $3.99 $7.99
Author Imaginando Lda
Type Effect
Effect type Reverb, Delay, Echo, Chorus, Flanger, Phaser etc.
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.44036 (109), current: 4.44036 (109)
Released 06/20/2018
Updated 11/12/2024

Echo Pitch is a pitch-shifting multi-delay for iPhone.

Price $4.99
Author Avi Bortnick
Type Effect
Effect type Reverb, Delay, Echo, Pitch effects
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.9375 (16), current: 4.9375 (16)
Released 12/06/2016
Updated 05/07/2026

Stellr is a pitch-shifter/delay/reverb sound processor aimed to recreate the classic shimmer effect.

Price $4.99
Author BACKPULLVER SOFTWARE LTD OOD
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 3.44444 (9), current: 3.44444 (9)
Released 04/26/2019
Updated 04/22/2026

GliderVerb is a “Reverberator with Glissandos” simulating a room gradually changing its shape.

Price Free
Author Amazing Noises
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.55294 (85), current: 4.55294 (85)
Released 07/25/2014
Updated 04/10/2026

Discord4 is the latest version of our most popular and long-lived product, our Discord stereo pitch shifter. Originally modeled from the H910, Discord has long since become its own effect and a studio standby, and this version includes major additions to further stretch its capabilities.

Price $8.99
Author Audio Damage, Inc.
Type Effect
Effect type Reverb, Delay, Echo, Pitch effects
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.68966 (29), current: 4.68966 (29)
Released 02/24/2018
Updated 10/09/2019

ADverb2 is an accurate model of a vintage digital plate reverb rack unit from the 80s, with a few modern tricks up its sleeve.

Price $4.99
Author Audio Damage, Inc.
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.58824 (17), current: 4.58824 (17)
Released 04/30/2018

Ratshack Reverb is a detailed model of that classic of classics, the Realistic Electronic Reverb. Now, you can have the sound of everyone's first analog delay unit, without ever having to change batteries!

Price $0.99
Author Audio Damage, Inc.
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.73913 (23), current: 4.73913 (23)
Released 10/20/2018

This is a direct 1:1 port of Audio Damage's Eos 2 desktop plug-in, identical in every way to the Eos you know and love.

Price $6.99
Author Audio Damage, Inc.
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.41176 (17), current: 4.41176 (17)
Released 06/27/2017
Updated 03/27/2026

Dual Digital Delay FX. Two separate (stereo) delay lines allow for a wide range of effects ranging from basic slapback and ping-ping type echos to complex modulations and soundscapes.

Price $5.99
Author Kai Aras
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 3.86667 (15), current: 3.86667 (15)
Released 03/22/2016
Updated 04/14/2022

RE-1 is a full featured virtual Tape Machine capable of delivering authentic tape based echo and chorus effects but it doesn't stop there. With it's interactive tape player, sample, loop and overdub features it's possible to use it like a virtual tape recorder, sample player, looper or simply as a master effect.

Price $9.99
Author Kai Aras
Type Effect
Effect type Reverb, Delay, Echo, Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.68939 (132), current: 4.68939 (132)
Released 08/23/2018
Updated 04/29/2024

FD-1 is a Semi-Modular Effect Plugin including dedicated Filter, Delay and Modulation sections.

Price $9.99
Author Kai Aras
Type Effect
Effect type Equalizer, Filter, Reverb, Delay, Echo, Modulation effects
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.625 (32), current: 4.625 (32)
Released 11/07/2019
Updated 09/24/2020

RF-1 is an Algorithmic Reverb (AU, AB, IAA, Standalone).

Price $5.99
Author Kai Aras
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.58333 (12), current: 4.58333 (12)
Released 10/13/2016
Updated 10/05/2020

Moebius Lab is a multimorphic sound processor which contains a synth, a varispeed stereo sample player, effects and LFOs that can modulate each parameter.

Price $9.99
Author Amazing Noises
Type Instrument, Effect
Instrument type Synth
Instrument sounds Keyboards
Effect type Equalizer, Filter, Reverb, Delay, Echo, Compressor, Limiter, Gate, Distortion, Drive etc., Chorus, Flanger, Phaser etc., Modulation effects, Pitch effects
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.9 (50), current: 4.9 (50)
Released 06/29/2016
Updated 01/28/2026

Dedalus Delay is a real time audio mangler. A network of delay lines is continually granulated and modulated, producing a labyrinth of echoes, which are further processed by filters, dynamic processors and saturation modules.

Price $5.99
Author Amazing Noises
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.625 (40), current: 4.625 (40)
Released 02/14/2015
Updated 01/28/2026

The Amazing Noises Reverb is a Feedback Delay Network (FDN) Reverb Effect, which can create nice reverberated ambiences, from small rooms to huge buildings.

Price $4.99
Author Amazing Noises
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.42856 (14), current: 4.42856 (14)
Released 12/30/2014
Updated 01/28/2026

Yukawa is an AUv3 compatible multi-effects plug-in that combines a tempo-synchronized multi-tap sequence delay that produces rhythmic phrases, a modulatable stereo delay, and a DJ mixer-style filter.

Price $5.00
Author iceWorks, Inc.
Type Effect
Effect type Equalizer, Filter, Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.78125 (32), current: 4.78125 (32)
Released 09/09/2020
Updated 09/07/2025

Kajita combines two-stage multi-tap stereo delay with reverb, allowing you to create complex spatial effects.

Price $5.00
Author iceWorks, Inc.
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 5 (20), current: 5 (20)
Released 08/29/2021
Updated 09/07/2025

The ERS 250 reverb audio plugin was originally designed and sold by Harrie Munnik and his Dutch company EmptyRoomSystems.

Price $13.99
Author Christian Siedschlag
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audio Unit (AU)
Rating total: 4.33333 (6), current: 4.33333 (6)
Released 09/03/2021
Updated 01/03/2026

During a routine mining expedition in the outer regions of the galaxy five mysterious boxes of unknown origin were found. Rumours among the workers spread quickly that there was a strange feeling being around these boxes, as if time flows in a different way, not just forward but sometimes also folding back on itself. The miners nicknamed them, the five boxes of reverberation. After the excavation process, to study them more closely, it was decided to transport them back to earth.

Price $4.99
Author Erik Sigth
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 4.71929 (57), current: 4.71929 (57)
Released 10/02/2021
Updated 06/17/2024

Studio quality reverb for AUv3 / Audiobus / Inter-app audio and songs from your iTunes music library.

Price $1.99
Author Harry Gohs
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)
Rating total: 3.86364 (22), current: 3.86364 (22)
Released 08/05/2013
Updated 06/19/2025
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Did you know?

Inter-App Audio (IAA) is a technology by Apple Inc, allows audio connection feature between apps. To use this feature, you need to have at least two IAA compatible applications installed on your iOS (iPhone, iPad etc.) device, first acts as a host and receives audio stream, and second acts as a node (or instrument) and publishes an output. Also, IAA node can transform audio or MIDI signal sent by host app, and return it in a modified form.