QuantiChord
Laurent Colson Music iPhoneiPadiPod touchMac
QuantiChord is a paid Music app for iPhone and iPad by Laurent Colson. Rated 4.0/5 from 11 ratings. Requires iOS 13.0. Updated January 29, 2026.
- Rating
- 4.0
- 11 ratings
- Price
- 12.99 USD
- on the App Store
- Size
- 34 MB
- Age 4+
- Updated
- Jan 29
- 2026 · v2.3
Screenshots
About QuantiChord
"QuantiChord" is a MIDI effect that generates chords from incoming notes and quantizes the results to a pre-defined scale. It can be used as a standalone application or as an AUv3 MIDI effect plug-in. The chord is generated by adding up to 8 transposed notes to the original note played. Once the chord is generated, it is quantized to limit it to the selected output scale. The application supports full internal and external MIDI connections for input and output. An internal sound bank is included. The AUv3 MIDI effect plug-in supports multiple instances. A compatible host is required to run the plug-in. The host must support the Audio Unit v3 (AUv3) MIDI effect format. Hosts supporting AUv3 MIDI effect on iOS: Logic Pro, Cubasis, Beatmaker, AUM, Audiobus, NanoStudio, Auria Pro, apeMatrix. Hosts supporting AUv3 MIDI effect on macOS: Logic Pro 10.7 or later. Features: • Standalone application and AUv3 MIDI effect plug-in • 8 transposing sliders from -24 to +24 semi-tones (+/- 2 octaves) • 1 global transposer slider • Scale quantizer • Lockable parameter protection when switching presets • Resizable keyboard • Multitasking support • Stop "Audio Background" automatically after inactivity (15 min, 30 min, 1 h, 2 h, or never) • Sample-accurate timing • Internal sound bank • Receiving MIDI from external MIDI sources • Internal routing of inputs, outputs • Send MIDI to a virtual port usable as MIDI input by other "Core MIDI" compatible apps • Random creation of presets • Presets browser • "Program Change" support • Preset sharing support by "AirDrop", "Mail", "Messages", and other supported services • Native iCloud support • "iCloud Drive" support in the "Files" app on iOS and "Finder" on macOS • Full support of "Windowed Apps" mode on iPad • Undo/Redo Supported MIDI connections: • Virtual "Core MIDI" connections between applications • Any compatible MIDI interface • MIDI over Wi-Fi • MIDI over Bluetooth
Ratings & reviews
4.0
11 ratings
What’s new
Version 2.3 · Updated January 29, 2026
• New option to automatically stop Audio Background when the app is inactive (15 min, 30 min, 1 h, 2 h, or never) • Minor bugs fixed
App privacy
The developer, Laurent Colson, 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 |
|---|---|---|---|---|
| QuantiChord | 4.0 / 5 (11 ratings) | 12.99 USD | January 29, 2026 | |
| Impaktor | 3.7 / 5 (53) | 6.99 USD | Aug 7, 2025 | Compare |
| Note to Be - MIDI Quantizer | 4.9 / 5 (7) | 4.99 USD | Sep 25, 2026 | Compare |
| Kebarp AUv3 MIDI Arpeggiator | 4.7 / 5 (14) | 5.99 USD | Oct 26, 2026 | Compare |
| ScaleBud 2 AUv3 MIDI Keyboard | 4.0 / 5 (10) | 6.99 USD | Sep 25, 2026 | Compare |
| EvolverFX AUv3 Audio Plugin | 4.7 / 5 (35) | 14.99 USD | Dec 10, 2025 | Compare |
| FuncBud Math Sequencer & Synth | 4.9 / 5 (8) | 5.99 USD | Sep 25, 2026 | Compare |
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