# Mochizuki - AUv3 Synth — 4-Oscillator Synthesizer

> Four-oscillator subtractive synthesizer for music creation. (iPhone/iPad app by iceWorks, Inc..)

- Source: https://appshunter.io/ios/app/mochizuki-auv3-synth/id6776942580 (this page in markdown: same URL + `.md`)
- Developer: [iceWorks, Inc.](https://appshunter.io/developer/347507439)
- Category: Music
- Price: Free with in-app purchases
- Rating: 3.50/5 from 10 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 18 · 37 MB
- Languages: American English
- Released: 2026-07-11
- Data updated: 2026-08-19
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/mochizuki-auv3-synth/id6776942580/reviews.md

## What is Mochizuki?

Mochizuki is a subtractive synthesizer with four oscillators.

For detailed information, including the user manual, please visit the product website:
https://icegear.net/

## Key features

- Subtractive synthesis
- Four oscillators
- AUv3 plugin support
- Sound manipulation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Free 7-day trial | Free | one-time |
| Core Features | $20.00 | one-time |
| Small Tip | $1.00 | one-time |
| Medium Tip | $3.00 | one-time |
| Large Tip | $5.00 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/mochizuki-auv3-synth/id6776942580/reviews.md

### 5/5 — Beautiful Powerhouse

*2026-07-26*

This synthesizer is a beautiful powerhouse, it has a tasteful sleek UI, beautiful sound quality, and is a modular powerhouse. 

It’s fairly intuitive, and with a little trial and error can be learned relatively quickly.

Compared to the world of desktop VST‘s, this Synths price point of $20 is a huge value, and basically a steal at its price point. If $20 is the entrance fee for a pro grade synthesizer, then I am happy to pay that price of admission.

As usual, IceGear delivers an ultra premium prograde synthesizer experience with this synthesizer that maintains this developers reputation of being within the top synthesizer auv3 manufacturers on the iOS platform. 

Bravo.

PS: A master/main volume parameter would be nice to have and is really the only thing I think is missing from this synth.

### 5/5 — Low score because of unlock price?

*2026-07-22*

Loved all the others. Tried this and it is also great. Thanks!

### 1/5 — Disappointing release from a great developer

*2026-07-15*

Really sad this app has in-app purchases, costs more than any other app from the developer, and all this is only for “Version 1” features. I really liked previous apps, but this is a letdown for a synth with a multi-page list of limitations on the developer’s website. This one’s lacking the unique flavor of previous releases and the high aesthetic quality of past plugins. Really hope IceWorks goes back to the quality of apps and value they used to provide.

**Developer response:** Thank you very much for taking the time to leave your review.

I sincerely appreciate your feedback regarding the wording of the in-app purchase.

Based on the feedback I have received, I have renamed the in-app purchase to “Core Features” and revised its description so that it more clearly explains that it is a one-time purchase to unlock all of the core features currently included in Mochizuki.

Mochizuki is offered as a product with its current core feature set. “Core Features” is a one-time purchase that unlocks all of those core features. It is not a subscription. Once the core features have been unlocked, you will never be asked to purchase them again in order to continue using them.

I also try to disclose compatibility information and known limitations in advance whenever possible, so that customers can make an informed decision before purchasing rather than discovering such information afterward.

Thank you as well for sharing your thoughts about the design and overall direction of the instrument.

### 1/5 — No way and going my way

*2026-07-12*

I have several IceWorks AUv3 plug-in synths … all paid for outright and they are good; however, I will not invest in clock n’ dagger apps with limited trial periods before the become inoperable unless you pay for an IAP.  Much worse, a Volume 1???.  Where is IceWorks going with this?  It is like a life time driven “ha ha, we did not finish this app” periodic extortion of expensive IAPs.  Forget it.  

I will never recommend apps like this to anyone.  I blame Apple for this and setting a precedence of endless payment apps that can no more be guaranteed for a lifetime than the man in the moon. Companies go out of business. Companies do not grow and support changes to their apps with Apple’s ridiculous annual OS updates and before you know it, you have an unsupported dinosaur taking up memory on you iPhone, iPad, and/or Mac.  This insane greediness and entrapment into constant payments and unsupported guarantees MUST END.

Sorry, IceWorks.  NO DEAL‼️

**Developer response:** Thank you very much for taking the time to share your thoughts.

I am sorry that the in-app purchase raised concerns about possible future charges.

Based on the feedback I have received, I have renamed the in-app purchase to “Core Features” and revised its description so that it more clearly explains that it is a one-time purchase to unlock all of the core features currently included in Mochizuki.

Mochizuki is offered as a product with its current core feature set. “Core Features” is a one-time purchase that unlocks all of those core features. It is not a subscription. Once the core features have been unlocked, you will never be asked to purchase them again in order to continue using them.

Thank you again for your valuable feedback.

### 1/5 — Disappointed by This Release

*2026-07-12*

I’m disappointed by this release by the developer. I own all of the other apps they’ve made. I find this one to lack the unique character that their other apps have had in the past and it does not seem as well thought-out as previous entries, and I am concerned about the price structure with in-app purchases and the cost being substantially more than previous apps for just a “version 1 unlock”... I worry they’ll be asking for more money in the future. There are also an absurd number of disclaimers on the developer’s website about this synth. For their most expensive release yet, it has a severe list of limitations, some of which are quite basic. Lastly, I personally think this doesn’t live up to the aesthetic bar set in previous releases and the interface lacks the beauty of their previous work. I wish this was like their original slate of synthesizers. The dev’s previous work is some of my all-time favorite.

**Developer response:** Thank you very much for supporting my products over the years.

Knowing how highly you regarded my previous instruments, I am truly sorry that Mochizuki did not meet your expectations. I also sincerely appreciate your feedback regarding the wording of the in-app purchase.

Based on the feedback I have received, I have renamed the in-app purchase to “Core Features” and revised its description so that it more clearly explains that it is a one-time purchase to unlock all of the core features currently included in Mochizuki.

Mochizuki is offered as a product with its current core feature set. “Core Features” is a one-time purchase that unlocks all of those core features. It is not a subscription. Once the core features have been unlocked, you will never be asked to purchase them again in order to continue using them.

I also try to disclose compatibility information and known limitations in advance whenever possible, so that customers can make an informed decision before purchasing rather than discovering such information afterward. If the way I presented that information gave the impression that the product has an excessive number of limitations, I will certainly consider improving how it is communicated.

Thank you as well for your honest comments regarding the design and overall direction of the instrument. I will keep them in mind as I continue my development.

## Frequently asked questions about Mochizuki

### What is Mochizuki?

Mochizuki is a subtractive synthesizer application that features four oscillators. It is designed for creating and manipulating sounds within a music production environment.

### What devices does Mochizuki support?

Mochizuki is available on macOS, iPhone, and iPad, allowing for flexible use across different Apple devices.

### What is the age rating for Mochizuki?

Mochizuki has an age rating of 4+, making it suitable for a wide range of users.

### How often is Mochizuki updated?

The latest version, 1.0.3, was released on July 16, 2026, indicating recent development activity. The initial release date was July 11, 2026.

### Does Mochizuki have ads?

No, Mochizuki does not contain advertisements, providing an uninterrupted user experience.

### What is the user rating for Mochizuki?

Mochizuki currently has a rating of 2.3 stars based on 3 user reviews.

### Is Mochizuki free to download?

Yes, Mochizuki is available for free download, with the option for in-app purchases.

### Where can I find the user manual for Mochizuki?

Detailed information, including the user manual and important notices, can be found on the official product website at https://icegear.net/.

## Version history (last 5 releases)

### 1.2.1 — 2026-08-19

- Modulation Shaper: Added Width parameters to Low and High, allowing you to set the range over which each value is maintained.
- Added an option on the Store screen to display the Store button as an icon only.
- Bug fixes and minor improvements.

### 1.2.0 — 2026-08-01

- Added a Step Sequencer.
- Added a third Global LFO (now 3 in total).
- Added a Random LFO waveform.
- Added a Monopolar mode for LFOs, which outputs only positive values.
- FM Oscillators can now use either the Carrier or the Modulator as the FM input destination from other oscillators.
- Added Pitch Quantization for each oscillator. Modulation of Octave and Semitone can now be pitch-quantized.
- Added a Master Volume control.
- Bug fixes and minor improvements.

### 1.1.0 — 2026-07-20

- Added a new Polyphonic Program arpeggiator style
- Bug fixes and minor improvements.

### 1.0.3 — 2026-07-16

* Added a Zigzag arpeggiator pattern.
* Bug fixes and minor improvements.

### 1.0.2 — 2026-07-13

* Fixed an issue where held notes could not be dragged again when the on-screen keyboard was in Hold mode.
* Fixed an issue on iPadOS 18 where the Active switches for the Arpeggiator, Noise, and Texture could not be operated.

## More apps by iceWorks, Inc.

- [Laplace - AUv3 Plug-in Synth](https://appshunter.io/ios/app/laplace-auv3-plug-in-synth/id920832974)
- [Lorentz - AUv3 Plug-in Synth](https://appshunter.io/ios/app/lorentz-auv3-plug-in-synth/id1016055431)
- [Mersenne - AUv3 Plug-in Synth](https://appshunter.io/ios/app/mersenne-auv3-plug-in-synth/id1084197093)
- [Redshrike - AUv3 Plug-in Synth](https://appshunter.io/ios/app/redshrike-auv3-plug-in-synth/id1165470423)
- [Kronecker - AUv3 Plug-in Synth](https://appshunter.io/ios/app/kronecker-auv3-plug-in-synth/id1371863334)
- [Lagrange - AUv3 Plug-in Synth](https://appshunter.io/ios/app/lagrange-auv3-plug-in-synth/id1479000758)

All apps by iceWorks, Inc.: https://appshunter.io/developer/347507439

---

*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 2026-08-19.*