Audio Unit (AU) technology enabled Reverb, Delay, Echo effect app list for iOS
FD-1 is a Semi-Modular Effect Plugin including dedicated Filter, Delay and Modulation sections.
| Price | $9.99 $4.99 |
|---|---|
| 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 |
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 $4.99 |
|---|---|
| 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 | 06/28/2026 |
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 | 08/17/2026 |
BLEASS Motion FX contains 11 different effects which you can modulate precisely thanks to an intuitive and comprehensive sequencer.
| Price | $7.99 $4.99 |
|---|---|
| Author | BLEASS |
| Type | Effect |
| Effect type | Equalizer, Filter, Reverb, Delay, Echo, Modulation effects, Pitch effects, Other |
| Supports | Audio Unit (AU) |
| Rating | total: (12), current: (12) |
| Released | 03/21/2021 |
| Updated | 08/15/2025 |
This is a natural sounding reverb audio effect.
| Price | $1.99 |
|---|---|
| Author | Aleksandar Mlazev |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audio Unit (AU) |
| Released | 01/16/2019 |
| Updated | 08/09/2026 |
apeDelay - spectral Delay implements up to 2048 delay lines with feedback or up to 2048 Brick-wall filters.
| Price | $6.99 $3.99 |
|---|---|
| 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 |
K7D is a vintage tape delay effect plugin for iOS.
| Price | $3.99 |
|---|---|
| Author | Imaginando Lda |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (79), current: (79) |
| Released | 05/06/2019 |
| Updated | 07/27/2026 |
DLYM is a ‘Delay Modulator’ plugin which produces flanger and chorus style effects using Imaginando’s powerful processing technology.
| Price | $3.99 |
|---|---|
| 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 | 07/27/2026 |
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: (19), current: (19) |
| Released | 04/30/2018 |
| Updated | 07/30/2026 |
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 | $4.99 |
|---|---|
| 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 |
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 | $4.99 |
|---|---|
| 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 |
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 | $4.00 |
|---|---|
| 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: (33), current: (33) |
| 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 | $4.00 |
|---|---|
| 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 |
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: (57), current: (57) |
| Released | 10/02/2021 |
| Updated | 06/23/2026 |
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: (35), current: (35) |
| Released | 06/17/2020 |
| Updated | 08/20/2025 |
BLEASS delay transforms your sounds into cinematic and experimental sonic experiences! It is constantly creating flux in the audio signal making your music even more lively.
BLEASS delay is also ideal for making track build-ups and transitions.
| Price | $6.99 |
|---|---|
| Author | BLEASS |
| Type | Effect |
| Effect type | Reverb, Delay, Echo |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (50), current: (50) |
| Released | 02/21/2019 |
| Updated | 09/12/2025 |
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 | $9.99 |
|---|---|
| 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.