Polythemus AUv3 Midi was created for five main uses: сreating a polyphonic synth from individual monophonic synths, stacking different or similar synths that play alternatively for variation, interesting variations in timbre & rhythms by having multiple synths driven with a sequencer (e.g. Quantum) or arpeggiator, work outside IOS on hardware synths, voice allocation of externally hosted software vst(e.g. Logic or Ableton Live) using mac osx IDAM for direct device to mac midi.
| Price | $3.99 |
|---|---|
| Author | anthony saunders |
| Type | Tool |
| Supports | Audio Unit (AU) |
| Rating | total: (7), current: (7) |
| Released | 03/05/2019 |
| Updated | 03/30/2019 |
"QuantiChord" is a MIDI effect that generates chords from incoming notes and quantizes the results to a pre-defined scale. It can be used as a standalone application or as an Audio Unit MIDI effect plug-in.
| Price | $12.99 |
|---|---|
| Author | Laurent Colson |
| Type | Tool |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (11), current: (11) |
| Released | 11/16/2018 |
| Updated | 01/29/2026 |
RhythmBud is a MIDI effect application that would transform incoming MIDI messages into the rhythmic pattern you will create on its editor.
| Price | $4.99 |
|---|---|
| Author | Cem Olcay |
| Type | Tool |
| Supports | Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link |
| Rating | total: (20), current: (20) |
| Released | 11/06/2019 |
| Updated | 05/29/2021 |
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 |
Get audio visuals with your AUv3 host or the standalone app. Scope uses a two-axis graph to give a visual representation of a waveform over time, with the horizontal axis representing time and the vertical axis representing the amplitude.
| Price | $2.99 |
|---|---|
| Author | DiscoDSP LLC |
| Type | Tool |
| Supports | Audio Unit (AU) |
| Rating | total: (20), current: (20) |
| Released | 05/11/2020 |
| Updated | 05/03/2026 |
With sEGments slicer/sampler app you can Import any loop/sample/audio file and find the best samples inside it, using the automatic transient detection or manually adding markers.
| Price | $12.99 |
|---|---|
| Author | Elliott Garage |
| Type | Instrument, Tool |
| Instrument type | Sampler |
| Instrument sounds | Other |
| Supports | Audio Unit (AU) |
| Rating | total: (172), current: (172) |
| Released | 06/26/2020 |
| Updated | 05/04/2026 |
Session Notes AU provides access to a custom-tailored notes database directly within your Digital Audio Workstation (DAW).
| Price | $1.99 |
|---|---|
| Author | Christian Thompson |
| Type | Tool |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (9), current: (9) |
| Released | 02/18/2021 |
| Updated | 03/26/2026 |
SnakeBud is a 16-step AUv3 MIDI Sequencer with a 4x4 grid. You can set the note, gate, velocity and probability values for each step and you can also toggle them on/off.
| Price | $6.99 |
|---|---|
| Author | Cem Olcay |
| Type | Tool |
| Supports | Audio Unit (AU), Ableton Link |
| Rating | total: (15), current: (15) |
| Released | 06/02/2021 |
| Updated | 09/02/2024 |
Song Memo is the easiest way to take notes of your song ideas. The chord keyboard of Song Memo allows you to write chord progressions more quickly. Chords are automatically detected while you are taking a note.
| Price | Free |
|---|---|
| Author | AmoriyA |
| Type | Tool |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (440), current: (440) |
| Released | 04/20/2019 |
| Updated | 09/30/2022 |
"StepPolyArp Unit" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an Audio Unit MIDI effect plug-in.
| Price | $19.99 |
|---|---|
| Author | Laurent Colson |
| Type | Instrument, Tool |
| Supports | Audiobus, Audio Unit (AU), Ableton Link |
| Rating | total: (47), current: (47) |
| Released | 07/25/2018 |
| Updated | 01/30/2026 |
StreamByter is a plugin for creating custom MIDI effects.
| Price | Free |
|---|---|
| Author | Audeonic Apps |
| Type | Effect, Tool |
| Effect type | Other |
| Supports | Audio Unit (AU) |
| Rating | total: (24), current: (24) |
| Released | 07/26/2018 |
| Updated | 06/09/2021 |
A streaming sound palette for experimental musicians, sound designers and artists. Includes over 40 preset randomized Internet audio streams.
| Price | $2.99 |
|---|---|
| Author | Casey I.T. LLC |
| Type | Tool |
| Supports | Inter-App Audio (IAA), Audio Unit (AU) |
| Rating | total: (17), current: (17) |
| Released | 06/08/2018 |
| Updated | 01/18/2024 |
SynthJacker is an autosampler for iOS. It automatically plays back a MIDI sequence with the notes and velocities you specify, and records the results into an audio file. It then slices the audio into individual sample files, ready to import into an iOS sampler app of your choice.
| Price | $8.99 |
|---|---|
| Author | Conifer Productions Oy |
| Type | Tool |
| Supports | Audio Unit (AU) |
| Rating | total: (22), current: (22) |
| Released | 01/12/2019 |
| Updated | 06/28/2022 |
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: (45), current: (45) |
| Released | 09/08/2020 |
| Updated | 05/09/2026 |
The music theory reference tool for musicians of all skill levels. Tonality allows you to view and listen to a large database of piano chords and scales and features a chord-recognition tool that can identify chords you play on your instrument.
| Price | $7.99 |
|---|---|
| Author | Bryce Hostetler |
| Type | Tool |
| Supports | Audio Unit (AU) |
| Rating | total: (128), current: (128) |
| Released | 06/13/2019 |
| Updated | 11/20/2023 |
Velocity Filter is the way to make all your synthesizer patches respond to MIDI velocity in a natural and musical way.
| Price | $2.99 |
|---|---|
| Author | Blue Mangoo Consulting Company Limited |
| Type | Effect, Tool |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (6), current: (6) |
| Released | 07/24/2019 |
| Updated | 11/17/2020 |
Visual Mixer is an audio unit plugin that puts the volume and pan controls for all your tracks together into one simple interface.
| Price | $4.99 |
|---|---|
| Author | Blue Mangoo Consulting Company Limited |
| Type | Tool |
| Supports | Audio Unit (AU) |
| Rating | total: (14), current: (14) |
| Released | 10/15/2019 |
| Updated | 05/29/2024 |
VS provides a creative way to generate beautiful graphical representations of your music projects. Driven by both audio and MIDI data, VS is the visual equivalent of a traditional synthesizer.
| Price | $24.99 |
|---|---|
| Author | Imaginando Lda |
| Type | Tool |
| Supports | Audiobus, Audio Unit (AU) |
| Rating | total: (122), current: (122) |
| Released | 06/14/2021 |
| Updated | 11/27/2025 |