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

New version 2.22.0
Old version 2.21.11
Release Notes Lots of MIDI-related work! • Numerious bug fixes related to MIDI connections • New button in Settings that shows active MIDI device connections as well as a visual indicator when MIDI traffic is incoming. • Touching the device count button shows the connected MIDI devices and their channels (if known). • Simplified / streamlined MIDI packet processing
Author Brad Howes
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Audio Unit (AU)

If you play a musical instrument or sing a song, this app should be supported by you higher / lower the pitch.

New version 4.0.2
Old version 4.0.1
Release Notes Fixed the display on iPad mini (6th generation).
Author Loop-Sessions.LLC.
Type Effect
Effect type Equalizer, Filter, Pitch effects
Supports Audio Unit (AU)

Stage Traxx is an audio player designed for professional musicians working with backing tracks. With Stage Traxx 3, controlling your live performance will be easier than ever before.

New version 3.4.5
Old version 3.4.4
Release Notes ADDED * New remote commands to scroll up / down full page of lyrics FIXED * Playback problem when a playlist contains same song multiple consecutive times * Missing reload button in song details view * Possible crash when switching on/off dark mode * Crash when using selection up / down remote command in empty playlist * Multiple stability improvements when editing song properties
Author Peter Dikant
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Audiobus

SynthMaster One iPhone is KV331 Audio's first full blown synth app for iPhone. It's a powerful wavetable synth with an intuitive workflow. With its simple layout, rich wavetable/waveform content and inspiring factory presets library, designing new sounds with SynthMaster One iPhone is a joy.

New version 1.5.6
Old version 1.5.5
Release Notes -Audio input is enabled so effects such as vocoder can be used -fixed a bug that may cause crash after registration -fixed a bug related with the vLFO -fixed a bug that causes crash while loading some of the online user presets -fixed a crash that occusrs on old devices (iOS 10)
Author KV331 Audio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

Load any MIDI file and sound library (a small General MIDI sound font is included). Play midi files with additional features.

New version 2.8
Old version 2.7
Release Notes Fixed channel sliders.
Author Dr. Garbers Softwareentwicklung
Type Instrument, Tool
Instrument type Sampler
Instrument sounds All-in-one
Supports Inter-App Audio (IAA), Audiobus

Mynth is the new intuitive and powerful synthesizer by Fingerlab.

New version 3.0.1
Old version 3.0
Release Notes This update brings some exciting new features: -UPDATE: iPhone12 and iPhone 13 display bug fix -UPDATE: iPad Mini 6 support -Midi mappings for all synth parameters -VCO Waveform new parameters: Bit Depth, Offset X & Offset Y -VCO Waveform editor update -36 new factory presets -LFO new continuous mode -Preset import & export -Filter cutoff updated with easing curve -Various bug fix and UI improvements Stay tuned! Fingerlab team
Author Fingerlab
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

apeFilter is a sophisticated Equaliser, the DSP is based on the Biquad/Cascade filters, very fast!

New version 3.2.1
Old version 3.2
Release Notes + Ready for iOS 15 + iPhone UI fixed + AUv3: LFO modulation Gain/Fc/Q bug fixed
Author apeSoft
Type Effect
Effect type Equalizer, Filter
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

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

New version 6.4.3
Old version 6.4.2
Release Notes We keep improving Remixlive to make sure you have the best experience possible when creating and composing! Remixlive comes with a lot of new cool features! If you like Remixlive, make sure to rate the app and follow us on Instagram @remixliveapp Version 6.4: The new update includes: • AI-powered sample import (Apple devices only), automatically classifies samples according to categories, sounds and BPM • The ability to export stems • Loop sections in song mode • Preview how sequences are made using the drum grid • 6 new FXs (Dusty LP, Band Crusher, OBXD (filter), Haunted Flanger, Dream Comb & Disco Vapor) • Various improvements: Tap Tempo button in BPM panel, Sequence record preview & fast access in Drum Grid, Live Set toggle button for projects
Author MIXVIBES
Type Instrument
Instrument type Sampler
Instrument sounds Other
Supports Inter-App Audio (IAA), Audiobus

If you play a musical instrument, this app should be supported by you lower the speed and play when you copy of a musical piece.

New version 4.0.2
Old version 4.0.1
Release Notes Fixed the display on iPad mini (6th generation).
Author Loop-Sessions.LLC.
Type Effect
Effect type Pitch effects
Supports Audio Unit (AU)

apeMatrix is a unique AU/IAA routing tool that gives you total control over what you want to do and how you want to do it.

New version 1.9.5
Old version 1.9.3
Release Notes + Ready for iOS 15 + iPhone UI fixed
Author apeSoft
Type Tool
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

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 1.4.5
Old version 1.4.4
Release Notes Added BHS Friedman Naked, CHP Egna Tweak and CHP Super Thunder Rig Libraries
Author Almateq SRL
Type Effect
Effect type Guitar effects, Bass effects
Supports Audio Unit (AU)

Syntronik is IK’s cutting-edge synthesizer that features the sound of the most iconic machines to ever grace the planet.

New price $7.99
Old price $14.99
Author IK Multimedia US, LLC
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus

mood is a personal interpretation of the legendary Analog Synthesizer by Eugenio Giordani

New version 1.7.5
Old version 1.7.4
Release Notes + iPhone UI fixed for some models + Ready for iOS 15
Author apeSoft
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

MultitrackStudio for iPad is an audio/MIDI multitrack recording app. It comes with many high quality audio effects including a guitar amp simulator.

New version 4.3
Old version 4.2
Release Notes • Improved Apple Pencil support. It's no longer used for scrolling, this allows for the editors to work with significantly less press-and-hold operations. Just a few actions require pressing the pencil until the selector appears, most notably adding notes and selecting a part in a MIDI editor. • AU plugins that support the MIDI 2.0 protocol now receive MIDI 2.0 per-note controls instead of MPE. These plugins can receive MIDI 2.0 per-note pitch bend and all registered per-note controllers except for #3. (requires iPadOS 15) • Supports AU plugins that convert audio to MIDI. • Track name box menus now have Duplicate option. It creates a new track with a copy of this track's content. • Note Editor has per-note articulation setting. It's only available if articulations have been set up for the MIDI instrument. • Added 'Raw MIDI Channels' Articulation preset. • Audio can be copy/pasted (or dragged) from audio track editor to Automated Fader, MIDI controller and automation editors. The amplitude envelope or audio pitch will be converted to dots. • Dots Editor has new Invert action, it flips the dots vertically. Applies to Automated Fader, MIDI controller and automation editors. • Keyboard shortcuts for Multi MIDI Editor: Command-U = all MIDI tracks, Option-Command-U = MIDI tracks having same color as focused track. (Pro Extension) • Pianoroll: lassoing notes has been improved to work better with consecutive notes. • Fixed: MIDI Pattern Editor's Instance Transpose setting didn't work right for Poly Aftertouch, Per Note Pitchbend and Per Note Controllers. • Fixed: Issue with deleting lassoed notes in pianoroll/score editor. • Track Pack IAP is discontinued. Its features are now part of the Pro Extension.
Author Giel Bremmers
Type Host
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU)

Make beats easily in landscape or portrait, your choice.

New version 1.9.43
Old version 1.9.42
Release Notes Tons of bugs have been fixed: √ Premium sounds can be selected correctly now √ Ads no longer show when you have a premium account √ Plus many more
Author SoundWare, Inc.
Type Instrument
Instrument type Sampler
Instrument sounds Drums, Percussion
Supports Audio Unit (AU), 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 1.2.4
Old version 1.2.3
Release Notes Many improvements to the way .dslibrary and .zip files are loaded. The plugin/app now asks you if you want to install libraries to your internal sample directory,
Author Decidedly, LLC
Type Instrument
Instrument type Sampler
Instrument sounds All-in-one
Supports Audio Unit (AU)

Groovebox is a free music studio app packed with synths and drum machines.

New version 2.7.5
Old version 2.7.4
Release Notes This version improves Voiceover support. If you enjoy using Groovebox, we'd really appreciate a review on the App Store. If you find bugs or have any comments, drop us a line at support@ampifymusic.com.
Author Focusrite Audio Engineering
Type Instrument
Instrument type Sampler, Synth
Instrument sounds Keyboards, Drums, Percussion
Supports Inter-App Audio (IAA), Audiobus, Ableton Link

This app is a music player that can process the following effects in real time: Time stretch (0.5-2.0 double speed), Pitch shift (-1 ~ +1 octave), 10 band equalizer.

New version 4.0.2
Old version 4.0.1
Release Notes Fixed the display on iPad mini (6th generation).
Author Loop-Sessions.LLC.
Type Effect
Effect type Equalizer, Filter, Pitch effects
Supports Audio Unit (AU)

SynthMaster One iOS is the mobile version of KV331 Audio's SynthMaster One software synthesizer.

New version 1.5.6
Old version 1.5.5
Release Notes -Audio input is enabled so effects such as vocoder can be used -fixed a bug that may cause crash after registration -fixed a bug related with the vLFO -fixed a bug that causes crash while loading some of the online user presets -fixed a crash that occusrs on old devices (iOS 10)
Author KV331 Audio
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link

A Simple Ad-Free Piano-like Musical Keyboard. Easy to Play, Good Response and Small Application Size. Just Play the Instrument. The app doesn't use sampled real sounds but use FM synthesis. It sounds like piano though it's false.

New version 1.0.14
Old version 1.0.13
Release Notes Renamed the App.
Author Ryouta Kira
Type Instrument
Instrument type Synth
Instrument sounds Keyboards, Piano
Supports Inter-App Audio (IAA)