# KQ Unotone Legacy — Small Synthesizer

> A portable synthesizer and effector with adjustable knobs and audio routing. (iPhone/iPad app by Ryouta Kira.)

- Source: https://appshunter.io/ios/app/kq-unotone-legacy/id1478535391 (this page in markdown: same URL + `.md`)
- Developer: [Ryouta Kira](https://appshunter.io/developer/862984358)
- Category: Music, Entertainment
- Price: $7.99
- Rating: 4.80/5 from 23 App Store ratings · 19 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 4 MB
- Languages: American English
- Released: 2019-09-05
- Data updated: 2026-08-23
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/kq-unotone-legacy/id1478535391/reviews.md

## What is KQ Unotone Legacy?

### THIS IS A DEPRECATED PRODUCT. Get KQ Unotone 26 instead. ###
If you bought this app recently, you can request a refund.

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.

Attention:
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.

## Key features

- 2 Oscillators
- LPF (Low-Pass Filter)
- Delay effector
- Ribbon controller
- Audio Unit v3 support
- Audiobus support
- Inter-App Audio support

## Recent user reviews (10 of 19)

All indexed reviews: https://appshunter.io/ios/app/kq-unotone-legacy/id1478535391/reviews.md

### 5/5 — top

*2025-05-23*

sehr geil. inkl. midi steuerung!

**Developer response:** Thanks for reviewing.
In version 1.0.3, touches at the bottom screen edge is improved.
Menu can be hidden by tapping a tab or swiping.

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.

### 5/5 — Macht Spaß! :-)

*2025-02-26*

Diese kleinen Kisten sind mächtiger, als es auf den ersten Blick aussieht  - und vor allem: Sie machen wirklich sehr viel Spaß!
Für den kleinen Preis habe ich gerne einfach mal ausprobiert und nicht bereut. 😃
Empfehlung!

### 5/5 — As beautiful as its analog counterparts

*2024-06-22*

Thank you so much for making this app! And it’s AUv3! I am using it in AUM and it works perfectly.

### 5/5 — Monotrons without the noise

*2023-02-19*

I have owned all 3 monotrons, but am most familiar with the Delay. This app immediately captures the spirit and vibe of each monotron. 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. 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!

### 5/5 — Useful as effects

*2021-09-10*

Fun to play with as synths, really nice quick and dirty delay to throw in an AUv3 effects chain too! I’ve never played with a real monotron but these seem like good imitations with better sound quality. Great fun!

### 5/5 — "Toy" in the best sense - soooo much fun!

*2021-08-18*

Have had more than my money's worth of good times in the first 10 minutes of firing this up, huge grin on my face and insanely happy. What a wonderful gem!

### 5/5 — great for the price

*2021-02-09*

This is a super fun set of things for cheap. Definitely sounds like the devices it is modeled after but then has numerous additional abilities. happy purchase

### 5/5 — 好きですが

*2021-02-08*

iOS 14.4でSettingsを開こうとすると固まります。ご報告まで。

追記：Amazonより速いバグ修正ありがとうございます笑

**Developer response:** ご報告ありがとうございます。早速修正したものをアップロードしました。公開までお待ち下さい。

### 4/5 — よい！！！

*2021-02-04*

のだが、GarageBandに繋いでいじっていると何故かアプリが勝手に終了してしまう…

**Developer response:** ご報告ありがとうございます。iOS/PadOS 14以降で設定が開けないバグを確認しました。次のバージョンで修正しますので、今しばらくお待ち下さい。

### 5/5 — What this is so dope

*2020-01-06*

Umm a toy yes but fun and great sounds bravo

## Frequently asked questions about KQ Unotone Legacy

### Is KQ Unotone Legacy still supported?

This product is deprecated. The developer recommends KQ Unotone 26 instead. If you purchased this app recently, you can request a refund from the developer.

### What are the key sound-shaping features in KQ Unotone Legacy?

KQ Unotone Legacy includes two oscillators and a low-pass filter (LPF) for shaping the tone. It also features a delay effector that can alter pitch when its time is tweaked.

### Does KQ Unotone Legacy have an Envelope Generator?

No, KQ Unotone Legacy does not include an Envelope Generator. This feature is available in other synthesizers.

### How can I connect KQ Unotone Legacy to other audio apps?

KQ Unotone Legacy supports Audio Unit v3, Audiobus, and Inter-App Audio. You must use it as either an 'Instrument' or 'Effector' when connecting.

### What should I do if the sound is silent or won't stop in KQ Unotone Legacy?

If the sound is silent or won't stop, try reducing the PEAK parameter or setting FEEDBACK to zero. To stop the delay, set FEEDBACK to zero, as TIME at zero does not turn off the delay.

### What devices is KQ Unotone Legacy compatible with?

KQ Unotone Legacy is compatible with iPhone, iPad, and iPod. It is rated for ages 4 and up.

### How often is KQ Unotone Legacy updated?

The latest version, 2.0.8, was last updated on October 2, 2025. While this indicates recent activity, the app is marked as deprecated.

### What is the price of KQ Unotone Legacy?

KQ Unotone Legacy is a paid app, priced at $5.99. There are no in-app purchases or advertisements.

## Version history (last 5 releases)

### 2.0.8 — 2025-10-02

This product became deprecated and has been renamed.

### 2.0.7 — 2023-06-18

Fixed a crash on Mac.

### 2.0.6 — 2023-06-02

The background color in dark mode is black (or gray).
Button appearance was incorrect with some host apps.
Other fixes.

### 2.0.5 — 2022-11-28

Added Slow LPF function.
You can turn off auto detection when learning MIDI CC.
Other fixes.

### 2.0.4 — 2022-04-23

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.

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## More apps by Ryouta Kira

- [KQ MiniSynth Legacy](https://appshunter.io/ios/app/kq-minisynth-legacy/id1070850573)
- [KQ Dixie Legacy](https://appshunter.io/ios/app/kq-dixie-legacy/id1330269027)
- [MIDI Recorder with E.Piano](https://appshunter.io/ios/app/midi-recorder-with-epiano/id1448577506)
- [Piano Modoki](https://appshunter.io/ios/app/piano-modoki/id1509387368)
- [KQ Sampei Legacy](https://appshunter.io/ios/app/kq-sampei-legacy/id1626784865)

All apps by Ryouta Kira: https://appshunter.io/developer/862984358

## Related topics

[kq unotone legacy](https://appshunter.io/ios/topics/kq-unotone-legacy)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*