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App Store Apps > Music > Jacquardi4
Jacquardi4 icon

Jacquardi4

by Satoshi Kajii · Music · $5.99
On the App Store since July 2026 · Data updated 2026-10-28

Jacquardi4 is made and published by Satoshi Kajii. AppBrain is an independent app data site and isn't affiliated with Satoshi Kajii. The app name, icon, screenshots and description belong to Satoshi Kajii and are shown as published on the App Store.

AppBrain's verdict

Last updated
August 3, 2026
Size
12.2 MB
Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By Satoshi Kajii, from the App Store
Jacquardi4 Screenshot 1 of 2
Jacquardi4 Screenshot 2 of 2
Screenshots by Satoshi Kajii, from the the App Store listing
Description by Satoshi Kajii Written by the developer, not by AppBrain. Click to read.
Concept:
“Jacquardi4” is an AUv3 instrument that does not make any sounds but can send out 4 analog-like “Envelope” signals via MIDI control changes (MIDI CC). That is, the app contains 4 MIDI modules of envelope generator. The user can use them for modulating any parameter of 3rd-party’s plugins that can be assigned to MIDI CC , for example, cutoff frequency.

System Requirements:
AUv3 host that has a flexible capability of MIDI routing (AUM, apeMatrix, LoopyPro, etc).

Usage:
Just assign MIDI keyboard to Jacquardi4's MIDI IN (it needs to trigger Jacquardi4) and assign Jacquardi4's MIDI OUT to 3rd party's plugins.

Explanation of sliders:

Channel: determines MIDI channel.
Control Rate: determines the resolution of MIDI processing. Higher value, higher resolution.
Active: turn on or off the module. Useful when using MIDI learn functionality of 3rd party plugin.
MIDI CC: determines MIDI control number. (text-editable)
Amp: determines amplitude in dB
Offset: determines an initial value.
Attack: attack value.
Decay Time: decay time value.
Decay Curve: decay curve value.
Sustain: sustain value.
Release: release value.

Explanation of Preset File System:

At first make a new bank folder, in which you can save a preset file. And push "Save As" button.
Also the user can export or import preset files.
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
$5.99
App size
12.2 MB
Content rating
Everyone

Technologies used by Jacquardi4

Releases

Updates seen on the App Store
Version
1.0.3
Launched
July 2026

No changelog data

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Rankings

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This app is not ranked

About the app and developer

About Jacquardi4

Jacquardi4 is a music app developed by Satoshi Kajii.

What is the rating of Jacquardi4?

Jacquardi4 has no ratings yet.

Is Jacquardi4 free?

Jacquardi4 costs $5.99. The app size is 12.16 MB. The latest version available is 1.0.3. The last update was on August 3, 2026.

What are the requirements for Jacquardi4?

The app has a content rating of Everyone. The app has been available on the App Store since July 2026.

Developer information for Satoshi Kajii

Satoshi Kajii

Address:

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