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A2M detects the pitch of the audio and converts it into the corresponding MIDI notes in real time. Thanks to this, you can play, e.g., the guitar, saxophone, or even sing, and simultaneously trigger sounds in virtual instruments (not only AU). These acoustic (or electric) instruments, or your voice, act as a MIDI controller.

New version 1.0.3
Old version 1.0.2
Release Notes Fixed bugs: • crash on changing the Latency/Accuracy slider • incorrect audio buffer duration shown in settings (standalone app)
Author Nilson Ltd.
Type Tool
Supports Audiobus, Audio Unit (AU)

Based on creative techniques developed by studio engineers and producers in the early 1980s, Shimmer Delay Ambient Machine combines reverb, pitch shifting, and feedback to create out-of- this-world soundscapes and spaces.

New price $4.99
Old price $8.99
Author Nembrini Audio
Type Effect
Effect type Reverb, Delay, Echo, Pitch effects
Supports Inter-App Audio (IAA), Audio Unit (AU)

This shimmer effect is a combination of effects that creates an etherial wall of sound. The effect combines a digital delay and pitch shifter to create multiple harmonies before entering a rich long reverb with controllable filtering. The resulting effect is a monsterously huge sound adding a spacious atmospheric quality to any lead instrument or vocal.

New price $4.99
Old price $5.99
Author 4Pockets.com
Type Effect
Effect type Reverb, Delay, Echo, Pitch effects
Supports Audio Unit (AU)

BST100 Super Overdrive guitar amplifier plugin is a perfect emulation of the 90s guitar amplifier Holy Grail!

New price $9.99
Old price $19.99
Author Nembrini Audio
Type Effect
Effect type Distortion, Drive etc., Guitar effects
Supports Inter-App Audio (IAA), Audio Unit (AU)

Rhythm Lab is a comprehensive rhythm app that tests your skill and coordination.  There are four types of drills: single, double, drum, and drum kit.

New price $5.99
Old price $8.99
Author Jonathan Ensminger
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audiobus

The Blackice Beta Gamma Bass Amplifier plugin based on modern-classic 900 watt bass guitar head and complete it with a virtual recording chain.

New price $9.99
Old price $19.99
Author Nembrini Audio
Type Effect
Effect type Bass effects
Supports Inter-App Audio (IAA), Audio Unit (AU)

The Moog Model 15 App is the Moog modular synthesizer and synthesis educational tool.

New version 2.2.11
Old version 2.2.10
Release Notes • Support for iPhone 13, iPad 9th Gen, iPad mini 6th Gen • Display of played notes from typing keyboard or MIDI keyboard • Support for MPE zones • Fixes to hold behavior from different sources • Multiple AUv3 instances can now simultaneously open their UI in the same host • Reduced memory usage • Reduced CPU usage
Author Moog Music Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Ableton Link

The Decent Samples plugin is a sample player that allows you to use your favorite Decent Samples sample libraries on the go. Many of the most popular Decent Samples releases are available through the app with more being added every week.

New version 1.3.2
Old version 1.3.0
Release Notes Fixed a bug that was making it impossible to "install" DSLIBRARY instruments. When reloading a session in a DAW, if DS is unable to find samples, it will search the instrument library for an instrument with the same name and try to load samples from that directory.
Author Decidedly, LLC
Type Instrument
Instrument type Sampler
Instrument sounds All-in-one
Supports Audio Unit (AU)

Modeled on the Roland SDE-3000 rack delay unit, the new DELAY3000 Vintage Modern Repeater plugin adds new features and an easy to use user interface that gives you a complete arsenal of delay effects at your disposal!

New price $4.99
Old price $9.99
Author Nembrini Audio
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audio Unit (AU)

The Quinta Pitch Machine is more than your standard octave in that it not only gives you notes an octave up and an octave down, but also gives you a fifth up.

New price $2.99
Old price $4.99
Author Nembrini Audio
Type Effect
Effect type Pitch effects
Supports Inter-App Audio (IAA), Audio Unit (AU)

Lyricist is an AUv3 plugin designed to add lyrics to your song. Lyrics can be spoken using the iOS built in speech synthesizer or passed through the included TalkBox effect to simulate a computerized singing voice. 

New price $6.99
Old price $8.99
Author 4Pockets.com
Type Instrument, Effect
Instrument type Synth
Instrument sounds Other
Effect type Vocal effects
Supports Audio Unit (AU)

polybeat is an advanced and extremely flexible drum and percussion sequencer able to generate complex polyrhythmic and polymetric rhythmic patterns.

Author Corne Driesprong
Type Tool
Instrument sounds Drums, Percussion
Supports Audiobus, Audio Unit (AU)

J_NO Chorus pays homage to a very famous effect from the 80s by re-creating the warmth a bucket brigade chorus gives.

Author Adam Bell
Type Effect
Effect type Chorus, Flanger, Phaser etc.
Supports Audio Unit (AU)

The Minimoog Model D App is a mobile transmutation of the world’s first portable synthesizer, the Minimoog Model D®.

New version 1.3.7
Old version 1.3.6
Release Notes • Support for iPhone 13, iPad 9th Gen, iPad mini 6th Gen • Display of played notes from typing keyboard or MIDI keyboard • Support for MPE zones • Fixes to hold behavior from different sources • Reduced memory usage • Reduced CPU usage
Author Moog Music Inc.
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

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

New version 9.5.63
Old version 9.5.55
Release Notes • New built-in arpeggiator • Effects automations • New built-in plugins: Lo-Fi and Dynamic EQ • New Tutorial Wizard • various bug fixes and enhancements Like 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. Thanks for using n-Track Studio!
Author n-Track S.r.l.
Type Host
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

The WoodStepper is a sequencer having both audio and midi out.

New version 4.0
Old version 3.3.3
Release Notes - Samples, TrackAudio and the 3 Oscillators can now be used in parallel. - All sources now have a step gain allowing for a different mixture per step. - All (almost) existing OSC params are changed into a STEP parameter. - Added Variations (Vari) panel : allows to changes parameters over a number of sequences (opposed to the per-step changes). is similar to LFO modulation at very low frequencies but timing is set by the number of sequences. 3 diff params can be changed . for each param the number of sequences can be set. params can be changed up/down. params can be changed continuously or only after the sequence starts again at step 1. 3 different note offsets can be set. Added Phase modulation to OSC1,2 & 3 (FM synthesis) Phase mod of OSC 1 is done with OSC2 Phase mod of OSC 2 is done with output (pre gain) of the next sequencer. Phase Mod of OSC3 is done by the Samples. Added step frequency modulation LFO to the Samples. Added step Detune to the Samples. Sample Start and Width are now STEP params. (different sounds per step …). Added Samples Auto Gain. Added LFO waveform to Samples modulation LFO. Added sync of OSC2 & 3 to OSC1. Added modulation LFO waveform to OSC 2 & 3. Added PulseWidth and Amplitude/PW modulation to OSC1. Added Ring modulation to Pan/Out panel : OSC1-OSC2 OSC-SMPLS SEQ1-SEQ2 Added MidiLearn for almost all parameters. Added distort function on the Track input source. UI : Replaced Next Sequencer button in each panel with radio buttons. Source panel popup replaced by buttons to allow parallel sources Midi settings (note range, channel) have their own panel (were in OSC 1) Added OSC1 LFO bars popup. Added Step note (pitch) recording mode : notes played are converted to pitch shift values. Added Vol button which will show all step gain values and when clicking the step led will show a popup to set the gain. Sequencer leds not shown any longer when sequencer row is off. Recording samples is now controlled only by the “Sampling Armed” button. (Sample Source needed to be on previously). Preset system updated : real (multiple) subfolders supported added Browser for presets and sample files factory presets are now in a subfolder “factory” factory synth presets are in subfolder “synth” when iCloud is NOT used, the standalone app will copy the presets and sample files into a shared (App Group) folder to make them available for the AUv3 plugins (copy is done only when starting up the standalone app) Bugs fixed : Fixed working in GarageBand Fixed popup menus in iOS15 (Vari notes, Volume popups, Copy/Paste popup)
Author Woodman's Immaculate Maple Syrup Studio
Type Tool
Supports Inter-App Audio (IAA), Audio Unit (AU)

If you’re not patient enough to ride audio level manually, this AUv3 plugin saves you a lot of time.

New price $3.99
Old price $5.99
Author Pham Thang
Type Effect
Effect type Compressor, Limiter, Gate, Other
Supports Audio Unit (AU)

Enhance your bass in a mix automatically. Feel and flow your bass on live performance.

New price $3.99
Old price $5.99
Author Pham Thang
Type Effect
Effect type Bass effects
Supports Audio Unit (AU)

TfxReverb is designed for simple and easy operation. When auto size mode is enabled, number of parameters can be controlled by a single dial to adjust size of the reverb sound, which can be synced to tempo.

New price $2.99
Old price $4.99
Author Ryo Togawa
Type Effect
Effect type Reverb, Delay, Echo
Supports Audio Unit (AU)