KQ Unotone 4+

Small Synthesizer

Ryouta Kira

Designed for iPad

    • 4.8 • 18 Ratings
    • $2.99



Not just a Toy Synthesizer. Good for make noise. Tweaking knobs is really fun!
Double-tap to adjust the knob.

- Included: 2 Oscillators, LPF, Delay effector, Ribbon controller
- Not included: Envelope Generator
- The pitch changes when you tweak Delay Time.
- Also acts as a effector.

- Audio Unit v3 is supported.
- Audiobus is supported.
- Inter-App Audio is supported.

You must use either "Instrument" or "Effector" when you connect it via Audiobus or Inter-App Audio.
Also Launching the app may be necessary after connection if you use iOS 12.4.

Try reducing PEAK or setting FEEDBACK to zero when the sound does not stop or is silent.
Delay is not turned off even if TIME is zero. Instead set FEEDBACK to zero.

What’s New

Version 2.0.4

The previous Audio Units are deprecated. This is because they fail validation in Logic Pro and MainStage. I plan to keep them for compatibility, but please attention.
Fixed some appearance glitches.

Ratings and Reviews

4.8 out of 5
18 Ratings

18 Ratings

TBMisamazing ,

Monotrons without the noisy output

I have owned all 3 monotrons, but am most familiar with the Delay. This app immediately captures the spirit and vibe of each monotron, and actually sounds pretty close to the hardware. The Deluxe model is cool because it essentially combines all 3 models and adds a few more features. What’s even cooler is you can create a sound using one of the monotron models, switch to Deluxe, and the sound you create will translate over so you can push that sound even further using the additional features of the Deluxe. This app is great if you want any or all of the monotrons without spending the money for the hardware, especially since you can’t buy the original one new anymore. Plus with this app, you can control all of them via midi, which means you can even play the Delay chromatically.

Two things worth mentioning are: you can only use this properly as an effector in Cubasis on audio tracks. Otherwise, you’ll trigger both the midi instrument and the Unotone when you play. A workaround is to freeze the midi, and then put the Unotone on the frozen track. Also, sweeping the Delay time knob quickly to the right from the left doesn’t produce the same effect as on the hardware; it doesn’t make that explosive crashing sound.

That being said, I think for the price this app is completely worth it. There’s plenty of fun to be had with these synths. I honestly have no real complaint. Another great app from KQ!

Korg Fan ,

Who needs a monotron when you can have these?

While I never played the real thing, these things sound just as wild as what I heard in videos! The waves sound great and have little aliasing, and the filter is so squelchy. Try processing them through FX and make a track with them!

Tenente ,

Killer Synth Cheese

This is so cool. It creates lo fi cheesy synth sounds like toy synthesizers are supposed to. Except these are high quality lo fi synth sounds that when fed into a sequencer come out as completely legitimate killer synth tracks that don’t sound cheap but definitely sound lo fi and cheesy in the best possible way. Seriously rockin toy synth.

App Privacy

The developer, Ryouta Kira, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer


You Might Also Like