KQ MiniSynth is a powerful polyphonic modular synthesizer.
This app lets you create tones with module patching.
You can add/remove up to 100 modules freely as you want.
(Oscillators, Envelope Generators, Filters, and so on)
Of course it depends on your device's ability.

Modular system is also good for education use.
You can learn the role of various modules while patching those.

The Patch-Editing view supports zooming.
You can connect modules with taps easily.

70 Presets are included.
External and Virtual MIDI is Supported.
MIDI over Bluetooth LE is Supported (Act as a Central device).
Inter-App Audio is Supported.
Audiobus is Supported.
Ableton Link integration.
Includes an Audio Unit Extension (AUv3 Instrument).

Q: The output sounds too quiet.
A: Expression value(Ctrl #11) may be too small. Try to Tap "RESET" on I/O Panel. When it is not improved, try to change an option "Boost Velocities".

Q: The velocities seem to be ignored on Audio Unit.
A: If you want to enable the note velocity function in Audio Unit, try to turn off "Ignore Velocities" in the settings. (The default is on because GarageBand sends velocities randomly.)

Q. I want to customize the software keyboard.
A. A gear appears when you drag the upper part of the keyboard. Try to tap it with another finger.

This app implements the follow modules.

- Oscillator Type A (Frequency Modulation)
- Oscillator Type B (Pulse Width Modulation)
- Super Saw Oscillator
- Low Frequency Oscillator
- LFO Type B (Tempo Synchronization)
- White Noise Generator

- 4 Channel Mixer
- CV Mixer
- Crossfader
- Voltage-Controlled Amplifier
- Sample-and-Hold Amplifier
- Booster

- Envelope Generator Type A
- Envelope Generator Type B
- Toggle
- Inverting Circuit
- Logical And (Series Switch)
- Logical Or (Parallel Switch)
- Polyphonic Or Gate
- Maximum/Minimum Selector

- V/Oct Vibrator
- Keyboard Level Scaling
- Ring Modulator

- Voltage-Controlled Filter (LPF/HPF/BPF/BEF)
- Delay Effector
- Modulated Delay
- Reverb Filter (KQ)
- Reverb Filter (FreeVerb)
- Compressor
- Chorus Effector
- Flanger

- Loop Gate (Tempo Synchronization)
- 8 Step CV Sequencer
- 8 Step Gate Sequencer

Stereo/Mono Converter
- Mono To Dualmono
- Stereo To Mono
- Panner

- Custom Controller
- Const Value

If you feel it sounds noisy, slow or stuttering, try to decrease polyphony, increase buffer size and reduce connected modules.

Introducing Audiobus support: Now you can stream live audio directly to other Audiobus-compatible apps! See for more information.

Ableton Link is a new technology that synchronizes beat, phase and tempo of Ableton Live and Link-enabled iOS apps over a wireless network.

What’s New

Version 2.0.8

Updated Audiobus SDK.

Ratings and Reviews

4.8 out of 5
11 Ratings

11 Ratings

HarryB87466 ,

Excellent your own AU synths!

I’ve bought quite a few iOS a short time ;) this one might require a bit more study and effort but you can do sooooo much with it. FM and analogue! A mix of the two! I’m still learning but I’ve already created some great stuff by tweaking the presets and building from scratch isn’t that hard.

Thanks Kira. Please keep adding to this!

Lemonia ,

Awesome synth

Very realistic analog sounding. You can learn all about wave forms and how modules effect one another, without having to buy an actual synth.

Laarz ,

Good functions and features

I'm having fun with this synth. It's a fully modular synth model with the limits not on the amount of modules but on the device running it. I don't understand what all the modules, knobs and inputs do but I am sure I can find enough info on modules and patching online to figure it all out as it seems to be pretty close to what is in use in analog set ups. The interface is very logical, easy to use and move around on, much better than other modular synth models on iOS. I like the rack mount style too because it gives a basic reference for how everything gets connected. The sound is very decent for playing around on and experimenting. The graphics could be slicker, but I kind of like that 90s raw software look to it. If the interface functions as smoothly as this does then looks really don't matter. Better this than the other way around. Congratulation to the dev for a nicely thought out app.


Ryouta Kira
16 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating
Rated 4+
© 2016-2019 KIRA Ryouta


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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