If you play a musical instrument, this app should be supported by you lower the speed and play when you copy of a musical piece.
| Price | Free |
|---|---|
| Author | Loop-Sessions.LLC. |
| Type | Effect |
| Effect type | Pitch effects |
| Supports | Audio Unit (AU) |
| Rating | total: (18), current: (18) |
| Released | 04/26/2013 |
| Updated | 01/05/2026 |
Poison-202 is a professional Vintage Midi Synthesizer.
| Price | $9.99 |
|---|---|
| Author | Dmitrij Pavlov |
| Type | Instrument |
| Instrument type | Synth |
| Instrument sounds | Keyboards |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU) |
| Rating | total: (283), current: (283) |
| Released | 09/09/2016 |
| Updated | 01/05/2026 |
Chameleon is an AUv3 compatible sampler instrument plugin for your favourite DAW.
| Price | $12.99 |
|---|---|
| Author | 4Pockets.com |
| Type | Instrument |
| Instrument type | Sampler |
| Instrument sounds | Other |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (43), current: (43) |
| Released | 03/23/2019 |
| Updated | 12/11/2025 |
ToneBoosters ReelBus is a magnetic tape simulation plug-in for iOS or iPadOS device.
| Price | $8.99 |
|---|---|
| Author | ToneBoosters |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (44), current: (44) |
| Released | 10/06/2019 |
| Updated | 01/03/2026 |
Dagger is an analog modeling paraphonic synth with a big, raw analog sound.
| Price | $9.99 |
|---|---|
| Author | BeepStreet |
| Type | Instrument |
| Instrument type | Synth |
| Instrument sounds | Keyboards |
| Supports | Audio Unit (AU) |
| Rating | total: (40), current: (40) |
| Released | 08/04/2023 |
| Updated | 08/04/2023 |
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 |
Traditional EQs influence the spectrum of the whole stereo field simultaneously. DirectionalEQ takes this concept one big step further: now you can equalize all directions in the stereo field independently.
| Price | $9.99 |
|---|---|
| Author | Christian Siedschlag |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (14), current: (14) |
| Released | 10/27/2017 |
| Updated | 01/02/2026 |
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 |
Based on Classic American EQ from the late '60s, the EQ550b is a continuation of the EQ that played a major role in the history of music recording, but with an additional filter band and several new frequencies.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (13), current: (13) |
| Released | 04/10/2020 |
| Updated | 01/02/2026 |
The EQ550 faithfully captures the punch, low-frequency transparency, and ultra-tight imaging of iconic American EQs of the late 1960’s.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (11), current: (11) |
| Released | 04/10/2020 |
| Updated | 01/02/2026 |
PolyIvoks Filter developed on the basis of the filter of the legendary Soviet synthesizer from 1980s, and only now the legendary Soviet analog sound became available in stereo mode.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (21), current: (21) |
| Released | 04/13/2020 |
| Updated | 12/29/2025 |
ToneBoosters Spectrogram shows a real-time spectrogram of the incoming audio signal. The ToneBoosters Spectrogram app captures the microphone input and processes the signals in real time.
| Price | Free |
|---|---|
| Author | ToneBoosters |
| Type | Tool |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (43), current: (43) |
| Released | 09/08/2020 |
| Updated | 12/28/2025 |
The Red Rock Sound Exciter will allow you to improve and enhance sonic quality of signal more naturally than with equalization. Unlike traditional EQ that just turns up the existing harmonics, Exciter generates additional harmonics, therefore there is no boost in the output signal level, this maintains a clear and balanced sound.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter, Other |
| Supports | Audio Unit (AU) |
| Rating | total: (21), current: (21) |
| Released | 04/30/2020 |
| Updated | 12/29/2025 |
The EQP-1A based on Classic Program Equalizer from the '60s, original EQ is renowned for its unique ability to boost and cut the same frequencies simultaneously, thereby creating a resonant shelf, the EQP-1A faithfully models the overbuilt transformers and complex tube amplifiers of the original hardware.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (15), current: (15) |
| Released | 09/08/2021 |
| Updated | 12/29/2025 |
The MEQ-5 based on Classic Mid-Range Equalizer from the '70s, with two bands of midrange boost and one band of midrange dip, the MEQ-5 gets the very best out of the «power region» where guitars and vocals can make or break a mix.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (6), current: (6) |
| Released | 09/08/2021 |
| Updated | 12/29/2025 |
The EQP-1A based on Classic Program Equalizer from the '60s, original EQ is renowned for its unique ability to boost and cut the same frequencies simultaneously, thereby creating a resonant shelf, the EQP-1A faithfully models the overbuilt transformers and complex tube amplifiers of the original hardware.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Equalizer, Filter |
| Supports | Audio Unit (AU) |
| Rating | total: (5), current: (5) |
| Released | 09/08/2021 |
| Updated | 12/29/2025 |
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 | $14.99 |
|---|---|
| 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 |
The Red Rock Sound SA60 real time 1/3 octave Spectrum Analyser combines ease of use, accuracy and versatility in one economical, reliable unit. Interface is modelled on classic DN60 spectrum analyser, originally developed in 1980.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Tool |
| Supports | Audio Unit (AU) |
| Rating | total: (10), current: (10) |
| Released | 05/15/2020 |
| Updated | 12/29/2025 |
Does your bass sound dull and lifeless? Red Rock Sound Bass Enhancer will be your choice to correct this deficiency. Bass Enhancer designed for saturation harmonics of low-frequency, it creates the effect of lower, deeper frequencies. This effect can not be created with simple equalization.
| Price | Free |
|---|---|
| Author | RRS, OOO |
| Type | Effect |
| Effect type | Bass effects |
| Supports | Audio Unit (AU) |
| Rating | total: (37), current: (37) |
| Released | 04/18/2020 |
| Updated | 12/28/2025 |