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NuRack is an AUv3 based multi-channel audio effects processor with a difference, it actually allows you to design your own custom effects using the building blocks provided.

New price $8.99
Old price $12.99
Author 4Pockets.com
Type Effect
Effect type All-in-one
Supports Audio Unit (AU)

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

New price $8.99
Old price $12.99
Author 4Pockets.com
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audio Unit (AU)

Drum surgeon is a dynamics / transient processor specifically designed for fine tuning your drums.

New price $5.99
Old price $7.99
Author 4Pockets.com
Type Effect
Effect type Other
Supports Audio Unit (AU)

n-Track Studio 8 turns your iPhone, iPad or iPod touch into a complete recording studio.

New version 9.9.2
Old version 9.9.1
Release Notes • Multi-out plugins support • Various bug fixes and enhancements Like making music with n-Track Studio? Please leave a review & help us keep improving the app for you. If you have comments or suggestions please use the Contact Support button in the Settings box. Thank you for using n-Track Studio!
Author n-Track S.r.l.
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

Waveshaping Synthesis is a type of distortion synthesis that can create dynamic spectra in a controlled way.

New price $4.99
Old price $9.99
Author Harry Gohs
Type Instrument
Instrument type Sampler, Synth
Instrument sounds Keyboards
Supports Audiobus, Ableton Link

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

New version 3.1.7
Old version 3.1.4
Release Notes - Added slower step times (1/2 bar, 1 bar , … 4 bars) to Sequencer - CV out now allows to set the output channel (useful when nr out channels > 8) - Fixed bug in multi-point ADSR Release : releasing the last note did re-trigger the release of the other voices - Fixed multi-bus out in AUM - Fixed overload (sometimes no sound) for very low frequency (C1 … ) phase modulation. - CV out on iOS can now be sent via extra busses (AUM, …)
Author Woodman's Immaculate Maple Syrup Studio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU), Ableton Link

This is a very simple yet powerful iOS app that performs as a polyphonic audio synthesizer.

New version 2.29.1
Old version 2.29.0
Release Notes * Fix access to font files on external drive after device restart. Thanks to Eduard for alerting me to the problem. * Minor UI fixes.
Author Brad Howes
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)

SWAM Euphonium is a brass sampler.

New version 3.7.0
Old version 3.6.0
Release Notes NEW - AUv3 view improvement: removed header to increase controls space (only for iPad) - Added latency compensation - Added search bar for preset lists - MIDI Preset list: improved sorting - Micro Tuning control by KeySwitches - iPhone: display of Transpose and Microtuning values in Home Page - Note out of range warning FIX - AUv3 plugin: crash when opening Settings pages in portrait mode - Mapping header behaving erroneously - iPhone: mapping curve view not updated after MIDI learn - iPhone: missing warning messages - SysEx messages: plugins receive F0 twice - iPhone: MAQAM not working properly - Microtuning - Yamaha XG SysEx protocol: note out of range wrong behavior - Fixed Cavit Scale Ultimate SysEx protocol
Author Audio Modeling
Type Instrument
Instrument type Synth
Instrument sounds Winds
Supports Audio Unit (AU)

Overloud TH-U turns your iOS device into a Guitar and Bass amp simulator, to let you play live, practice or record: standalone and AUv3 included.

New version 1.4.37
Old version 1.4.36
Release Notes New Jimi 100 Rig Library New Rand 666 Rig Library New Soldier SL30 Rig Library
Author Almateq SRL
Type Effect
Effect type Guitar effects, Bass effects
Supports Audio Unit (AU)

ArpBud 2 is a MIDI Arpeggiator app where you can create unique arp patterns and be able to arpeggiate your favorite software or hardware synthesizers.

New version 2.2
Old version 2.1
Release Notes Minor UI fixes.
Author Cem Olcay
Type Tool
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

This is a very simple yet powerful iOS app that performs as a polyphonic audio synthesizer.

New version 2.29.0
Old version 2.28.0
Release Notes * Additional MIDI controller labels * Updates to MID Devices view in Settings panel * Show MIDI channel of last incoming message * Allow fix-velocity notes per MIDI connection * New MIDI Assignments view in Settings panel * Assign MIDI change controller (CC) to predefined app actions * Allow changing of favorites via assigned MIDI CC * Allow changing of effect settings via assigned MIDI CC
Author Brad Howes
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)

SWAM French Horn Bb is a french horn sampler.

New version 3.7.0
Old version 3.6.0
Release Notes NEW - AUv3 view improvement: removed header to increase controls space (only for iPad) - Added latency compensation - Added search bar for preset lists - MIDI Preset list: improved sorting - Micro Tuning control by KeySwitches - iPhone: display of Transpose and Microtuning values in Home Page - Note out of range warning FIX - AUv3 plugin: crash when opening Settings pages in portrait mode - Mapping header behaving erroneously - iPhone: mapping curve view not updated after MIDI learn - iPhone: missing warning messages - SysEx messages: plugins receive F0 twice - iPhone: MAQAM not working properly - Microtuning - Yamaha XG SysEx protocol: note out of range wrong behavior - Fixed Cavit Scale Ultimate SysEx protocol
Author Audio Modeling
Type Instrument
Instrument type Synth
Instrument sounds Winds
Supports Audio Unit (AU)

A very easy to use audio editor and recorder.

New version 1.71
Old version 1.70
Release Notes More stability improvements.
Author TwistedWave Software Ltd.
Type Host
Supports Audiobus

Create and save complete multi-track music projects. Record, sequence, edit, mix and render complete songs.

New version 4.3.1
Old version 4.2.12
Release Notes - Multiband compressor now has per-band stereo separation - Allow more content types in Shop Packs, Synth and FX presets, MIDI, songs, drum kits and more - Sends level sliders are now scaled for more natural response - Support for OGG Vorbis files (both export and import) - Drum kits swapping on the fly (long tap on sample name, press Load Template) - Improved zip file import - The tempo rotary dial now changes in 0.1 BPM increments - Bugfixes
Author Image Line Software
Type Host
Supports Audiobus

SWAM Solo Brass is a Flugelhorn sampler.

New version 3.7.0
Old version 3.6.0
Release Notes NEW - AUv3 view improvement: removed header to increase controls space (only for iPad) - Added latency compensation - Added search bar for preset lists - MIDI Preset list: improved sorting - Micro Tuning control by KeySwitches - iPhone: display of Transpose and Microtuning values in Home Page - Note out of range warning FIX - AUv3 plugin: crash when opening Settings pages in portrait mode - Mapping header behaving erroneously - iPhone: mapping curve view not updated after MIDI learn - iPhone: missing warning messages - SysEx messages: plugins receive F0 twice - iPhone: MAQAM not working properly - Microtuning - Yamaha XG SysEx protocol: note out of range wrong behavior - Fixed Cavit Scale Ultimate SysEx protocol
Author Audio Modeling
Type Instrument
Instrument type Synth
Instrument sounds Winds
Supports Audio Unit (AU)

Combines the synthesis power of Addictive Synth with an easy to use 4 track loop phrase recorder.

New price $2.99
Old price $4.99
Author Harry Gohs
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audiobus

These instruments are NOT sample libraries. Unlike sampling, which uses recordings to replicate the sound of an instrument, physical modeling doesn’t generate a sound as such but creates the conditions for the system to create it according to an external input (like someone playing on a keyboard).

New version 3.7.0
Old version 3.6.0
Release Notes NEW - AUv3 view improvement: removed header to increase controls space (only for iPad) - Added latency compensation - Added search bar for preset lists - MIDI Preset list: improved sorting - Micro Tuning control by KeySwitches - iPhone: display of Transpose and Microtuning values in Home Page - Note out of range warning - Sound Engine: improved bow noise - Sound Engine: improved Attack Noise for mid and low dynamics - Sound Engine: improved NoteOff Release FIX - AUv3 plugin: crash when opening Settings pages in portrait mode - Mapping header behaving erroneously - iPhone: mapping curve view not updated after MIDI learn - iPhone: missing warning messages - SysEx messages: plugins receive F0 twice - iPhone: MAQAM not working properly - Microtuning - Yamaha XG SysEx protocol: note out of range wrong behavior - Fixed Cavit Scale Ultimate SysEx protocol
Author Audio Modeling
Type Instrument
Instrument type Synth
Instrument sounds Strings
Supports Audio Unit (AU)

These instruments are NOT sample libraries. Unlike sampling, which uses recordings to replicate the sound of an instrument, physical modeling doesn’t generate a sound as such but creates the conditions for the system to create it according to an external input (like someone playing on a keyboard).

New version 3.7.0
Old version 3.6.0
Release Notes NEW - AUv3 view improvement: removed header to increase controls space (only for iPad) - Added latency compensation - Added search bar for preset lists - MIDI Preset list: improved sorting - Micro Tuning control by KeySwitches - iPhone: display of Transpose and Microtuning values in Home Page - Note out of range warning - Sound Engine: improved bow noise - Sound Engine: improved Attack Noise for mid and low dynamics - Sound Engine: improved NoteOff Release FIX - AUv3 plugin: crash when opening Settings pages in portrait mode - Mapping header behaving erroneously - iPhone: mapping curve view not updated after MIDI learn - iPhone: missing warning messages - SysEx messages: plugins receive F0 twice - iPhone: MAQAM not working properly - Microtuning - Yamaha XG SysEx protocol: note out of range wrong behavior - Fixed Cavit Scale Ultimate SysEx protocol
Author Audio Modeling
Type Instrument
Instrument type Synth
Instrument sounds Bass
Supports Audio Unit (AU)

Turbosounds for Accordion provides many special sounds of the Oberkrainer folk music.

New version 2.8.1
Old version 2.8
Release Notes A problem with guitar-on-bass and accordion accompaniment volumes was resolved.
Author Reinhard Rieder
Type Instrument
Instrument type Sampler
Instrument sounds Keyboards, Guitar, Strings, Winds, Ethnic, Other
Supports Audio Unit (AU)

These instruments are NOT sample libraries. Unlike sampling, which uses recordings to replicate the sound of an instrument, physical modeling doesn’t generate a sound as such but creates the conditions for the system to create it according to an external input (like someone playing on a keyboard).

New version 3.7.0
Old version 3.6.0
Release Notes NEW - AUv3 view improvement: removed header to increase controls space (only for iPad) - Added latency compensation - Added search bar for preset lists - MIDI Preset list: improved sorting - Micro Tuning control by KeySwitches - iPhone: display of Transpose and Microtuning values in Home Page - Note out of range warning - Sound Engine: improved bow noise - Sound Engine: improved Attack Noise for mid and low dynamics - Sound Engine: improved NoteOff Release FIX - AUv3 plugin: crash when opening Settings pages in portrait mode - Mapping header behaving erroneously - iPhone: mapping curve view not updated after MIDI learn - iPhone: missing warning messages - SysEx messages: plugins receive F0 twice - iPhone: MAQAM not working properly - Microtuning - Yamaha XG SysEx protocol: note out of range wrong behavior - Fixed Cavit Scale Ultimate SysEx protocol
Author Audio Modeling
Type Instrument
Instrument type Synth
Instrument sounds Strings
Supports Audio Unit (AU)