Jacquardi4
Satoshi Kajii Music iPhoneiPadiPod touch
Jacquardi4 is a paid Music app for iPhone and iPad by Satoshi Kajii. Requires iOS 15.0. Updated August 3, 2026.
- Price
- 5.99 USD
- on the App Store
- Size
- 12 MB
- Age 4+
- Updated
- Aug 3
- 2026 · v1.0.3
Screenshots
About Jacquardi4
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.
What’s new
Version 1.0.3 · Updated August 3, 2026
Preset Manager: Canceling the import caused a crash. Now fixed.
App privacy
The developer, Satoshi Kajii, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Jacquardi4 | – | 5.99 USD | August 3, 2026 | |
| VelocityScaler | – | Free | Oct 9, 2026 | Compare |
| MOXI Sequencer & Controller | 3.0 / 5 (3) | 6.99 USD | May 6, 2026 | Compare |
| Verse & Voice: Songbook | 5.0 / 5 (1) | Free | May 16, 2026 | Compare |
| Super Serrated: Supersaw Synth | 5.0 / 5 (1) | 5.99 USD | Oct 17, 2026 | Compare |
| Kinetic by folina | 5.0 / 5 (1) | 2.99 USD | Sep 2, 2026 | Compare |
| KA mini HuLuSi | 5.0 / 5 (1) | 1.99 USD | May 28, 2024 | Compare |
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