Analog Synth X 4+

Aurelius Prochazka

Designed for iPad

    • 4.4 • 14 Ratings
    • Free

iPad Screenshots


Simple. Fun. Free. Open-source Synth, written in Swift & AudioKit.

Simple open-source synthesizer example for iPad created by Matthew Fecher & Aure Prochazka. Created entirely with Swift and AudioKit 3

Learn more about AudioKit:

Get the full source code now from the AudioKit website at

Requires iPad Retina devices or above. iPad Air/iPad Pro for best performance. Works on iPad Mini Retina.


* 5-Voice Virtual Analog Polysynth
* Dual Morphable VCO Oscillators
* Dedicated Sub Oscillator
* FM Oscillator w/ Mod
* Beautiful Sean Costello Reverb
* Free-running LFO w/ 4 waveforms
* Multi-tap (Ping-Pong) delay
* 4-Pole Vintage Modeled Filter
* ADSR Envelope
* MIDI in for notes
* Detune Oscillators by Semitone & Hz
* Hold & Mono modes for keyboard
* Noise generator
* 8-Bit Crusher

What’s New

Version 1.3.1

This app has been updated by Apple to display the Apple Watch app icon.

+ Fixed Output Waveform Display Scope & other iOS 11 fixes.
+ AudioKit Synth One is now available in the app store. It's Free!

Ratings and Reviews

4.4 out of 5
14 Ratings

14 Ratings

rcon303 ,

thick n juicy

nice job! needs midi but otherwise grrreat

vorreothoreo ,

Get sound working tutorial

Just tap the button in the filter section (bottom right)

Kareembyear1year ,

Getting no sound on iOS 11

Otherwise seems like it would be cool.🤷🏾‍♂️

App Privacy

The developer, Aurelius Prochazka, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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