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A simple free music player that allows you to play music files while playing effectors that support Audio Units Extension (AUv3 plugin) format.

New version 4.0.0
Old version 3.3.1
Release Notes - Up to 8 plugins can now be inserted. - Audio can now be saved in M4A format. - Video can now be saved in MP4 format.
Author fmfmsoft Corp.
Type Host, Tool
Instrument type Sampler
Supports Audio Unit (AU)

TriceraChorus is inspired by the classic tri-choruses and stompbox choruses of the 1970s and early 1980s. It pairs rich BBD style tri-chorusing with another classic effect of the 1980s: Eventide micro-pitch detuning.

New price $7.99
Old price $14.99
Author Eventide
Type Effect
Effect type Chorus, Flanger, Phaser etc.
Supports Audio Unit (AU)

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.

New version 1.7.8
Old version 1.7.6
Release Notes This update provides significant workflow, customisation, personalisation and performance improvements: - Improved UI performance and reduced CPU load - New option to enable highlighting of UI elements that accept keyboard input - New option to customize color scheme - Improved undo/redo functionality
Author ToneBoosters
Type Tool
Supports Inter-App Audio (IAA), Audio Unit (AU)

A matrix-controlled arpeggiator designed to play with your thumbs.

New price $4.99
Old price $9.99
Author Alexandernaut
Type Instrument, Controller
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Ableton Link

The world's first multi-playhead music sequencer.

New price $9.99
Old price $19.99
Author Alexandernaut
Type Host
Supports Inter-App Audio (IAA), Audiobus, Ableton Link

The BandHelper app works with your BandHelper account to share info with your bandmates, streamline your management duties and power your live show.

New version 2026-05-22
Old version 2026-04-24
Release Notes • Added the recording controls when playing a recording from the song edit page. • Removed the duplicate All and None buttons from picker windows. • Updated the Show Document Viewer action in an automation track to load the document for the current song if needed. • Updated the app control Hold detection so that if you press and release a button quickly before the end of the hold time, a click action will be triggered immediately without waiting until the end of the hold time; but if you release a button too slowly to be a click and not slowly enough to be a hold, no click or hold action will be triggered. • Updated the app control Double-Click and Hold detection to check for specific messages, to avoid delays if you click with one message and double-click or hold with a different message. • Stopped saving the list filters automatically and added explicit Save and Reset buttons instead. • Sped up the display of the App Control Status window.
Author Arlo Leach
Type Tool
Supports Inter-App Audio (IAA)

Castamatic is the app to listen to podcasts on any iOS device.

New version 13.0.6
Old version 13.0.5
Release Notes Version 13.0.6 - Fixed playback jumping back a few seconds when switching audio output (e.g. headphones or CarPlay) - Magic Chapters and Magic Transcript are now available when a podcast's published chapters or transcript file is missing or fails to load, instead of being hidden Version 13 - Magic Transcript: generate full episode transcripts on your device using Apple Intelligence. Tap any line to jump straight to that moment. - Magic Chapters: automatically split episodes into chapters using on-device AI, even when the podcast doesn't include them. - Transcript Panel: follow along with a live-scrolling transcript right in the player, with full transport controls. - Chapter artwork now displayed during previous/next chapter navigation. - Improved Value for Value reliability and error handling. - Improved CloudKit sync stability. - Numerous bug fixes and performance improvements.
Author Gunp Media Productions
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audio Unit (AU)

PhaseRings is a musical instrument for performing expressive music with touch gestures. Anyone can create a beautiful piece of music with our sound schemes and generative composition engine.

New version 2.0.0
Old version 1.5
Release Notes App updated for sound quality and stability on modern devices.
Author Charles Martin
Type Instrument, Controller
Instrument type Synth
Instrument sounds Other
Supports Inter-App Audio (IAA), Audiobus

Neon is a lightweight digital audio editor and recording plugin compatible with any AUv3 host.

New price $7.99
Old price $14.99
Author 4Pockets.com
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audio Unit (AU)

Backpack Studio allows you to easily create professional sounding,  studio quality recordings -  from anywhere in the world.

New version 3.0.4
Old version 3.0.2
Release Notes Minor bugfixes.
Author Ed Filowat
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Inter-App Audio (IAA), Audiobus

ShockWave is a monophonic Synthesizer designed to bring modular style workflow to the world of iOS & AUv3 plugins.

New version 1.1.6
Old version 1.1.5
Release Notes - Fixed an issue where the standalone app would not start properly - Improved iPhone AUv3 UI
Author Kai Aras
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

This audio shredder does just what is says, it shreds incoming audio (usually strings or lengthy sustained chords) into bite size pieces, adds an envelope and passes through a filter of choice.

New price $5.99
Old price $9.99
Author 4Pockets.com
Type Effect
Effect type Other
Supports Audio Unit (AU)

Evolver is a performance tool for creating multi-layered evolving sequences of sound.

New price $7.99
Old price $14.99
Author 4Pockets.com
Type Effect
Effect type Other

DigiKeys is an AUv3 compatible MIDI sequencer plugin for AUM or other AUv3 compatible host applications.

New price $6.99
Old price $9.99
Author 4Pockets.com
Type Tool
Supports Audio Unit (AU)

DigiStix 2 is an AUv3 compatible drum machine and sampler plugin for your favourite DAW.

New price $8.99
Old price $14.99
Author 4Pockets.com
Type Instrument
Instrument sounds Drums, Percussion
Supports Audio Unit (AU)

Turnado is a multi-effect tool, crafted especially for massive real-time audio manipulation.

New version 1.8.7
Old version 1.8.5
Release Notes - iCloud Sync bug fixed
Author Sugar Bytes GmbH
Type Effect
Effect type All-in-one
Supports Inter-App Audio (IAA), Audiobus

Agonizer is a monophonic synthesizer designed in collaboration with YouTuber and synth bass expert Jakob Haq of haQ attaQ

New version 1.3.1
Old version 1.3
Release Notes - Fixed an issue where the plugin would randomly crash when loading large host sessions - Fixed an issue where MIDI mapping parameters in AUM would not work properly
Author Kai Aras
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

GeoShred is an expressive musical instrument with a multi-touch performance surface, coupled with an advanced physical model of a guitar.

New version 7000.325.1.433
Old version 7000.318.1.426
Release Notes - Fix for User setlists not working for the plugin - Fix for MIDI config not sticking across preset changes - ET-Diff bounds checking improved
Author Wizdom Music LLC
Type Instrument, Controller
Instrument type Synth
Instrument sounds Guitar
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

TriceraChorus is inspired by the classic tri-choruses and stompbox choruses of the 1970s and early 1980s. It pairs rich BBD style tri-chorusing with another classic effect of the 1980s: Eventide micro-pitch detuning.

New price $7.99
Old price $14.99
Author Eventide
Type Effect
Effect type Chorus, Flanger, Phaser etc.
Supports Audio Unit (AU)

A very easy to use audio editor and recorder.

New version 1.99
Old version 1.98
Release Notes New: - When doing a long tap on the record button, you can select the polar pattern and the channels used for recording. - A long tap on the record button also allows you to check the levels before recording. - It is possible to disable playback to enable iOS to better match the file's sample rate when using external audio interfaces. Fixed: - A minor UI glitch in the waveform when starting or stopping the recording. - TwistedWave could crash when closing a document when a recording was in progress.
Author TwistedWave Software Ltd.
Type Host
Supports Audiobus
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