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This is a AUv3 compatible analyser / tuner which can be used as plugin with your favourite DAW such as Cubasis, Meteor, Auria or GarageBand.

New version 1.6
Old version 1.5
Release Notes v1.6 B7 Increased the detection range of the tuner up to 5KHz. Please note: This product is not a dedicated instrument tuner. It is monophonic and may have trouble detecting instruments with harmonics that are greater than the fundamental frequency. I have extended the range because I think people were thinking it wasn't working, but I placed restrictions on the detection range that might have been too restrictive.
Author 4Pockets.com
Type Tool
Supports Audio Unit (AU)

bs-16i is a 16 multi-timbral playback sampler. It supports SoundFont and DLS (Downloadable Sounds, and can be used for keyboard instrument, MIDI sound module, and MIDI player.

New version 4.7.3
Old version 4.7.2
Release Notes Improved app performance
Author bismark LLC
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

MIDI Strummer is an AUv3 plugin designed to simulate guitar strumming and picking techniques. It can used to generate MIDI note data which can be sent to either an external synth of choice or the internal soundfont engine.

New price $8.99
Old price $12.99
Author 4Pockets.com
Type Tool
Supports Audio Unit (AU)

Synthecaster fuses elements from guitars and keyboards into a full range polyphonic instrument that is intuitive, accommodates a wide variety of playing styles, and generates an even wider variety of sounds.

New version 3.5
Old version 3.4
Release Notes Internal updates for more recent iOS versions
Author Daniel Resnick
Type Instrument, Controller
Instrument type Sampler
Instrument sounds All-in-one
Supports Inter-App Audio (IAA), Audiobus

Time Machine is a plugin that allows you to go back to the days of vinyl and tube amplification. 

New price $4.99
Old price $9.99
Author 4Pockets.com
Type Effect
Effect type Other
Supports Audio Unit (AU)

Visual EQ Console is a multi-band EQ console with the ability to analyse audio in real time giving a spectrum representation of the frequency response. 

New version 1.13
Old version 1.12
Release Notes v1.13 B17 Updated app to be smoother / more responsive when manipulating knobs and graph. Hopefully fixed the issue with Cubasis where it was loosing its settings between launches on occasions. Although personally I couldn't reproduce the issue myself, I've tested this on several recent devices and everything appears to be working well for me.
Author 4Pockets.com
Type Effect
Effect type Equalizer, Filter
Supports Audio Unit (AU)

Mixvibes introduces the perfect remix toolbox: lay down samples on a grid of pads and tweak them in seconds.

New version 8.1.3
Old version 8.1.2
Release Notes Remixlive 8.1 redefines music creation with groundbreaking innovation! Version 8.1: New Features: - Transport Panel: New panel with play, stop, restart, sync, and metronome settings in one popover. - Pitchbend: Bend your session's pitch to match any BPM. Improvements: - Ableton Link: Enhanced start/stop for smoother sync. - Recording: Redesigned for better usability. Changes: - Settings: Moved to Home view. - Live Set: Integrated into project view. - Navbar: Enlarged on tablets for accessibility. Version 8.1.1, 8.1.2, 8.1.3: - bug fixes and performance improvement If you love the new version, make sure to rate the app and follow us on Instagram @remixliveapp
Author MIXVIBES
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Inter-App Audio (IAA), Audiobus

Helium is a lightweight AUv3 MIDI sequencer plugin designed specifically for AUM. It supports up to 16 tracks of unlimited length with the ability to direct output to 16 channels on up to 16 MIDI output ports.

New version 1.43
Old version 1.42
Release Notes 1.43 172 - Release Candidate NOTE: Appologies for a couple of major bugs getting through in the last version. I need to slow down and not rush things out without proper testing. This release fixes most of those known issues. Fix for importing 0 beat length chords during chord track imports, although this feature is currently alpha at best! Fixed a big issue sending a chord track specified as sending messsage type is notes, tone packets not effected (Ed's fix). Important fix for ghost track feature not displaying properly. Better conversion of unknown chords to note clusters. Fixed an issue with loop points not being reset properly when double tapping the ruler. Fixed an issue with the Global/Local chord track selection pointining to the wrong button. Fixed an issue where LONG pressing MENU displayed a toolbar where the arrow was nor butting up to the toolbar border. Fixed an issue with undo, where the paste cursor or selection range was not always reset if no info is stored as part of undo. Fixed an issue where duplicating chords and song parts no longer closes the toolbar. Fixed a bug where under certain circumstances the cursor in the controller area was not moving when the playing. Added a paste cursor to the controller lane so that we can still perform edits when the transport is running.
Author 4Pockets.com
Type Host
Supports Audio Unit (AU)

You found it! Drum Beats+ is the metronome app that improves your timing using great sounding drum beats, not a boring click.

New version 4.5.2
Old version 4.4.1
Release Notes • Tap logo to see all folders • Backup, share favorites with friends • Filter by straight, funky, swing, shuffle • Filter by calm, lively, strong, agitated 4.5.2 fixes some small bugs. Send feedback to support@ninebuzz.com. Thanks, Ninebuzz
Author Ninebuzz Software LLC
Type Instrument, Tool
Instrument type Sampler
Instrument sounds Drums, Percussion
Supports Inter-App Audio (IAA)

KQ MiniSynth is a polyphonic modular synthesizer.

New version 3.1.7
Old version 3.1.6
Release Notes Updated the sound designer's link.
Author Ryouta Kira
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

iDousyn is a Mobile Instrument App with a lot of high quality sounds selected for different musical genres.

New price Free
Old price $9.99
Author Jorge Lozada
Type Instrument
Instrument type Sampler
Instrument sounds All-in-one
Supports Inter-App Audio (IAA)

DIGITALISM 2000 is a new vintage synth module featuring exclusive sounds recorded from Digital Synths from the early 2000s. Retro and modern.

New version 1.4
Old version 1.2.5
Release Notes THANKS EVERYONE! ++ Another update to Modernize AUv3 State-saving and recall. If you still have trouble, please remove the app from your DAW/Host project and try re-adding it On the rare chance that doesn't work, you may have to restart your device. And re-add to your project ++ We have an awesome new app, KING OF DIGITAL! Grab it now, recommended if you like this app! Thanks again,
Author Audiobus Pty Ltd
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)

KQ Dixie is a 6-Operator FM synthesizer that is modeled on the synthesizer which appeared on the 1980s.

New version 3.4.8
Old version 3.4.6
Release Notes v3.4.7: Applied the dark mode for system objects. v3.4.8: Fixed crashes on iOS/iPadOS 16.x or the below.
Author Ryouta Kira
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audiobus, Audio Unit (AU)

Electro-Harmonix, a pioneer since 1968 in the field of sound effects pedals for musicians, has produced an app which is a faithful digital re-creation of their circa 1980 analog cult-classic, The MINI-SYNTHESIZER.

New version 2.0.0
Old version 1.1.0
Release Notes - Now with 12 voices! - Tap tempo is now visualized! - Preset management has been streamlined!
Author Electro-Harmonix
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus

Deplike lets you enjoy a full studio guitar setup from your iPhone & iPad. Install and get your dream pedalboard, amps and cabinets in your pocket.

New version 6.0.4
Old version 6.0.2
Release Notes Bug fixes
Author Deplike YAZILIM Muhendislik Sanayi ve Ticaret Limited Sirketi
Type Effect
Effect type Guitar effects
Supports Inter-App Audio (IAA), Audiobus

Redshrike is a polyphonic synthesizer that combines a resonator designed to make more complicated sound creation and subtraction synthesis with an FM oscillator that creates violent distortion.

New price $7.99
Old price $9.99
Author iceWorks, Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

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

New price $9.99
Old price $14.99
Author 4Pockets.com
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audio Unit (AU)

An app which is a faithful digital re-creation of their circa 1980 analog cult-classic, The MINI-SYNTHESIZER.

New version 2.0.0
Old version 1.1.0
Release Notes - Now with 12 voices! - Tap tempo is now visualized! - Performance Mode functionality has been expanded! - Preset management has been streamlined!
Author Electro-Harmonix
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus

WoodSynth is a synthesizer with 4 independent layers. Each layer is in fact a synthesizer on its own.

New version 3.8.1
Old version 3.8
Release Notes fixed bug in showing the factory samples in the source/load panel.
Author Woodman's Immaculate Maple Syrup Studio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU), Ableton Link

WoodScaper combines into one unit the 4 classic guitar effects : phaser, chorus/flanger, wah-wah and tremelo.

New version 1.6.2
Old version 1.6
Release Notes - fixed bug when inserted on stereo track : dry signal was converted to mono
Author Woodman's Immaculate Maple Syrup Studio
Type Effect
Effect type Chorus, Flanger, Phaser etc., Modulation effects, Pitch effects, Guitar effects
Supports Audio Unit (AU)