KQ Unotone

KQ Unotone is a toy synthesizer which has 2 oscillators.
Contact Information is here.
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KQ Unotone Icon
KQ Unotone
Ryouta Kira
Download on the App Store

Just a Toy Synthesizer.
Tweaking knobs is really fun!

– Included: 2 Oscillators, LPF, Delay effector, Ribbon controller
– Not included: Envelope Generator
– The sound 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.

URL Scheme: kqunotone://

Connect either “Instrument” or “Effector” when you use at Audiobus or Inter-App Audio.
Also Launching the app may be necessary after connection if you use iOS 12.4.

Bug information

  • On app version 1.0.14 or lower and iOS/iPadOS 14 or later, the app freezes when you try to open a new window. This bug has been fixed in version 1.0.15.


KQ Unotone Icon
KQ Unotone
Ryouta Kira
Download on the App Store

Update History

Date format: Year-Month-Day.

Version 1.0.21

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.
This app may work on Apple Silicon Mac although I don’t have the new machine yet.

The menu is now displayed at startup on iPad.
Other fixes.

Released on 2021-12-20.

Version 1.0.20

  • Updated SDK.
  • Zooming glitch has been fixed.
  • Released on 2021-09-08.

Version 1.0.19

  • Fixed Appearance on iOS/iPadOS 15.
  • Updated SDK.
  • Released on 2021-09-08.

Version 1.0.18

  • Bug-fix: Colors could not have been changed.
  • Released on 2021-04-26.

Version 1.0.17

  • Fixed appearance in Audio Unit.
  • Fixed a crash bug.
  • Released on 2021-04-22.

Version 1.0.16

  • Bug-fix: Multiple touches with Ribbon was disabled.
  • Bug-fix: Appearance when IAA connected is fixed.
  • Improved animation in iPhone X or above.
  • Released on 2021-04-07.

Version 1.0.15

  • Fixed a bug that caused the app to freeze in iOS/iPadOS 14.
  • Released on 2021-02-09.

Version 1.0.14

  • Fixed a bug when the MIDI device is connected or disconnected.
  • Released on 2021-02-07.

Version 1.0.13

  • Some small fixes.
  • Released on 2020-10-20.

Version 1.0.12

  • Updated Audiobus SDK.
  • Released on 2020-09-07.

Version 1.0.11

  • Added an option which enables Bluetooth Hands-Free Profile. (Previously this was always enabled.)
  • Released on 2020-07-13.

Version 1.0.10

  • Fixed a crash bug at a specific window size.
  • Released on 2020-03-24.

Version 1.0.9

  • Bug-Fix: A List of Files except iCloud was not updated.
  • Released on 2020-01-13.

Version 1.0.8

  • Fixed a crash bug that occurs on 32-bit devices (iPhone 5, iPad 4th Gen.).
  • Updated Audiobus SDK.
  • Released on 2020-01-08.

Version 1.0.7

  • Fixed an infrequent crash bug with a specific operation.
  • Released on 2019-10-29.

Version 1.0.6

  • Bug-fix: Text was not visible when using Dark Mode on system.
  • Other small fixes.
  • Released on 2019-10-22.

Version 1.0.5

  • Updated Audiobus SDK.
  • Released on 2019-10-22.

Version 1.0.4

  • Added Hold function.
  • Changed MIDI Learn of the lower-left switch on Origin, Duo, and Delay mode.
  • Changed 2-position toggles’ behavior.
  • Released on 2019-09-30.

Version 1.0.3

  • Improved touches at the bottom screen edge.
  • Changed its volume. You can also change the behavior as same as the previous version.
  • Supports iOS 13.
  • Released on 2019-09-26.

Version 1.0.2

  • You can use Bluetooth headphones though they delay.
  • Bug-fix: An issue that Appearance and MIDI Learn were not loaded at launching, is fixed.
  • Released on 2019-09-20.

Version 1.0.1

  • Bug-Fix: It may have crashed at a specific screen size (on Audio Unit).
  • Released on 2019-09-16.

Version 1.0

  • Initial Version.
  • Released on 2019-09-05.