Inter-App Audio (IAA) enabled Reverb, Delay, Echo effect app list for iOS
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 | $3.99 $4.99 |
|---|---|
| Author | Erik Sigth |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU) |
| Rating | total: (53), current: (53) |
| Released | 10/02/2021 |
| Updated | 06/17/2024 |
Spring Reverb models the sound and character of popular spring reverbs found in guitar amplifiers, popularized by Surf, Garage and Rockabilly music.
| Price | $14.99 $7.99 |
|---|---|
| Author | Eventide |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (14), current: (14) |
| Released | 01/15/2020 |
| Updated | 03/06/2024 |
UltraTap is a unique multi-tap effect capable of rhythmic delays, glitchy reverbs, huge pad-like volume swells and extraordinary modulation.
| Price | $14.99 $7.99 |
|---|---|
| Author | Eventide |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (21), current: (21) |
| Released | 08/17/2019 |
| Updated | 03/06/2024 |
MangledVerb is a unique effect combining a rich reverb with devastating distortion.
| Price | $14.99 $7.99 |
|---|---|
| Author | Eventide |
| Type | Effect |
| Effect type | Reverb, Delay, Echo, Distortion, Drive etc. |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (18), current: (18) |
| Released | 11/27/2019 |
| Updated | 03/06/2024 |
Eventide Crystals Harmonizer® combines twin reverse pitch shifters with reverse delays and reverb. This iconic H3000 effect can be used to create out-of-this-world climbing and cascading pitched delays or to create unique sounding reverbs. It features two reverse granular delays that can be manipulated by length and pitch.
| Price | $14.99 $7.99 |
|---|---|
| Author | Eventide |
| Type | Effect |
| Effect type | Equalizer, Filter, Reverb, Delay, Echo, Pitch effects |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (20), current: (20) |
| Released | 06/08/2020 |
| Updated | 03/06/2024 |
Frekvens is a frequency shifter and delay effect.
| Price | $2.99 |
|---|---|
| Author | Erik Sigth |
| Type | Effect |
| Effect type | Reverb, Delay, Echo, Pitch effects, Stereo, Pan effects |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU) |
| Rating | total: (20), current: (20) |
| Released | 02/20/2016 |
| Updated | 11/25/2025 |
The ERS 250 reverb audio plugin was originally designed and sold by Harrie Munnik and his Dutch company EmptyRoomSystems.
| Price | $13.99 $6.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (6), current: (6) |
| Released | 09/03/2021 |
| Updated | 01/22/2025 |
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: (32), current: (32) |
| Released | 11/07/2019 |
| Updated | 09/24/2020 |
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: (15), current: (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: (130), current: (130) |
| Released | 08/23/2018 |
| Updated | 04/29/2024 |
apeDelay - spectral Delay implements up to 2048 delay lines with feedback or up to 2048 Brick-wall filters.
| Price | $6.99 |
|---|---|
| Author | apeSoft |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link |
| Rating | total: (17), current: (17) |
| Released | 06/20/2015 |
| Updated | 07/22/2025 |
Sonic texture generator / blur / non-linear reverb
| Price | $7.99 |
|---|---|
| Author | Yuri Turov |
| Type | Effect |
| Effect type | Reverb, Delay, Echo, Other |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU) |
| Rating | total: (45), current: (45) |
| Released | 10/16/2020 |
| Updated | 05/12/2021 |
Back in the “old days”, producers and engineers created delay and echo effects using tape machines. Tap Delay combines the warm sound of vintage tape echo machines with a modern, step sequencer-like tapped delay engine which continues the tradition of the tape echo machines into the 21st century.
| Price | $1.99 |
|---|---|
| Author | Harry Gohs |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audiobus |
| Rating | total: (13), current: (13) |
| Released | 07/28/2015 |
| Updated | 06/13/2022 |
Studio quality reverb for AUv3 / Audiobus / Inter-app audio and songs from your iTunes music library.
| Price | $2.99 |
|---|---|
| Author | Harry Gohs |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU) |
| Rating | total: (22), current: (22) |
| Released | 08/05/2013 |
| Updated | 06/19/2025 |
The multi-band delay BandDelay is a tool for sound design and loop manipulation in realtime. In contrast to common delay processors BandDelay splits the frequency spectrum of the input signal into 27 bands and applies a separate delay unit to each band.
| Price | $9.99 |
|---|---|
| Author | Harry Gohs |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link |
| Rating | total: (11), current: (11) |
| Released | 11/21/2019 |
| Updated | 06/19/2025 |
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: (15), current: (15) |
| Released | 12/06/2016 |
| Updated | 11/11/2025 |
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: (16), current: (16) |
| Released | 06/27/2017 |
| Updated | 05/14/2025 |
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: (17), current: (17) |
| Released | 04/30/2018 |
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.