Audio Unit (AU) technology enabled Reverb, Delay, Echo effect app list for iOS
K7D is a vintage tape delay effect plugin for iOS.
| Price | $9.99 $7.99 |
|---|---|
| Author | Imaginando Lda |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (78), current: (78) |
| Released | 05/06/2019 |
| Updated | 05/25/2024 |
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: (109), current: (109) |
| Released | 06/20/2018 |
| Updated | 11/12/2024 |
This shimmer effect is a combination of effects that creates an etherial wall of sound. The effect combines a digital delay and pitch shifter to create multiple harmonies before entering a rich long reverb with controllable filtering. The resulting effect is a monsterously huge sound adding a spacious atmospheric quality to any lead instrument or vocal.
| Price | $4.99 $7.99 |
|---|---|
| Author | 4Pockets.com |
| Type | Effect |
| Effect type | Reverb, Delay, Echo, Pitch effects |
| Supports | Audio Unit (AU) |
| Rating | total: (30), current: (30) |
| Released | 02/15/2019 |
| Updated | 08/29/2025 |
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: (9), current: (9) |
| Released | 04/26/2019 |
| Updated | 04/22/2026 |
BLEASS Shimmer is an AUv3 compatible Shimmer Reverb Effect that brings harmonic tails to any sound or instrument with very low CPU usage.
| Price | $6.99 |
|---|---|
| Author | BLEASS |
| Type | Effect |
| Effect type | Reverb, Delay, Echo, Pitch effects |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (34), current: (34) |
| Released | 06/17/2020 |
| Updated | 08/20/2025 |
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: (29), current: (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: (17), current: (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: (23), current: (23) |
| Released | 10/20/2018 |
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: (132), current: (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: (32), current: (32) |
| Released | 11/07/2019 |
| Updated | 09/24/2020 |
Play or save the files with added reverb. Use play through mode or Audiobus for realtime reverberation.
| Price | Free |
|---|---|
| Author | Markus Sigg |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (32), current: (32) |
| Released | 04/26/2013 |
| Updated | 03/24/2026 |
TfxEcho is an echo effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device). BBD is used in various analog delay unit and is known for its warm and dark sound.
| Price | $1.99 |
|---|---|
| Author | Ryo Togawa |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audio Unit (AU) |
| Rating | total: (12), current: (12) |
| Released | 07/16/2020 |
| Updated | 01/15/2026 |
TfxReverb is designed for simple and easy operation. When auto size mode is enabled, number of parameters can be controlled by a single dial to adjust size of the reverb sound, which can be synced to tempo.
| Price | $1.99 |
|---|---|
| Author | Ryo Togawa |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audio Unit (AU) |
| Rating | total: (8), current: (8) |
| Released | 08/31/2020 |
| Updated | 01/15/2026 |
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: (32), current: (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: (20), current: (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: (6), current: (6) |
| Released | 09/03/2021 |
| Updated | 01/03/2026 |
Envelope is a high class reverb audio unit for use as a standalone app or (preferably) in AUv3 hosts.
| Price | $9.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audio Unit (AU) |
| Rating | total: (19), current: (19) |
| Released | 06/15/2016 |
| Updated | 01/02/2026 |
Convolution is a highly complex signal processing approach, that needs some certain computation power. The recorded impulse response of a real world environment is used to render a reverberation effect onto any audio material, so that it sounds like the source was played in that original room or at that location.
| Price | $24.99 |
|---|---|
| Author | Jens Guell |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audio Unit (AU) |
| Rating | total: (5), current: (5) |
| Released | 01/10/2020 |
| Updated | 03/03/2024 |
Audio Units (AU) is an audio plug-in technology built in Apple's macOS and iOS operating systems. Initially developed for desktop operating systems along with VST (Virtual Studio Technology by Steinberg GmbH), it available now for iOS too. AU apps (plug-ins) can modify sound pitch, sample rate and stream over network, produce signal.