---
title: "Jacquardi4 - Reviews, Revenue and Downloads in Canada | Apple App Store"
description: "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"
---

# Jacquardi4 — Canada
> MIDI Envelope Generator

![Jacquardi4 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/8e/5b/7c/8e5b7cf1-4fdd-a3b3-8266-be4616e36f6b/AppIcon-1x_U007emarketing-0-8-0-85-220-0.png/434x0w.png)

**Developer:** [Satoshi Kajii](https://apptail.io/developer/satoshi-kajii-OWdu)
**Category:** Music
**Rating:** N/A (0 ratings)
**Price:** $7.99
**Bundle ID:** com.bija.Jacquardi4
**Store:** Apple App Store
**Country:** Canada
**Version:** 1.0.3 (released 2026-08-03)
**Original Release:** 2026-07-06

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/ca/app/app/id6786135940)
**AppTail Page:** [https://apptail.io/app/jacquardi4-PEKA/canada](https://apptail.io/app/jacquardi4-PEKA/canada)

## Jacquardi4 Description
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.

## Jacquardi4 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fc/9a/1c/fc9a1ca8-d94b-9d52-5a36-78f2b1fc8039/Simulator_Screenshot_-_iPhone_16_Pro_-_2026-07-03_at_06.43.51.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/eb/68/ab/eb68ab72-1e0f-5f0d-2222-a4ec5206a2aa/Simulator_Screenshot_-_iPhone_16_Pro_-_2026-07-03_at_06.43.34.png/2688x1242.png)







## Jacquardi4 Available In
- [Canada](https://apptail.io/app/jacquardi4-PEKA/canada)
- [United States](https://apptail.io/app/jacquardi4-PEKA/united-states)

---

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