Laurent Colson - Development

03/02/2026

Doug just released a video about the new ChordPolyPad update.
It premieres tonight at 8pm UK time on YouTube.
Thanks Doug for taking the time to do this.

You can get ChordPolyPad here on the App Storehttps://apps.apple.com/gb/app/chordpolypad/id694599930App and AUv3 MIDI effect for iPhone/iPad/Mac"ChordPolyPad...

03/02/2026

🎹 ChordPolyPad 3.0 is out!

The Random Chord Generator has been completely redesigned, letting you create chords in 16 different musical moods with smoother, more natural progressions.

The new Global Scale System now applies across all pads and supports your own custom scales, making it easier to stay in key while exploring ideas.

The Preset Manager has been updated to handle in-app purchase packs, each including 6 free presets so you can try them before deciding.

Standalone app and AUv3 plug-in, one purchase for iPhone, iPad, and Mac.

Discover more here → https://dev.laurentcolson.com/chordpolypad.html

25/09/2025

🎉 StepPolyArp celebrates 15 years!

To mark the occasion, I’ve created a 15th Anniversary Bundle featuring StepPolyArp, ChordPolyPad, QuantiChord, and MusicMath in a single pack, available for a limited time from September 25 to October 25, 2025.

If you already own some of the apps, the bundle price automatically adjusts.

Discover it now and explore all the tools to compose, experiment, and bring your musical ideas to life.

https://itunes.apple.com/app-bundle/id1840714890?mt=8

24/09/2025

StepPolyArp, ChordPolyPad, QuantiChord, and MusicMath are now fully compatible with iOS 26, iPadOS 26, and macOS 26, including the new iPadOS windowing mode for smoother multitasking.

Update now and experience the improved workflow on your devices.

https://dev.laurentcolson.com

09/04/2025

Just an ordinary street.
Then suddenly, spring slips in quietly,
dressing the trees in pink,
and turning the everyday into something magical.

05/04/2025

StepPolyArp 5.0.3 is now available!
This update includes minor bug fixes to improve stability and performance.

https://dev.laurentcolson.com/steppolyarp.html

StepPolyArp is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an AUv3 MIDI effect plug-in.

28/01/2025

Big thanks to Doug for his tutorial on StepPolyArp version 5 🙏

You can get StepPolyArp here on the App Storehttps://apps.apple.com/gb/app/steppolyarp/id1361313588You can get Logic Pro here at the App Storehttps://apps.ap...

18/01/2025

Another masterpiece from Perplex On 🖤

Created this little sequence for one day of by sending chords into the recently updated . When dialing in some step randomizatio...

15/01/2025

Thanks to perplex_on, always happy to find out how he uses StepPolyArp 🖤

https://www.instagram.com/reel/DEqBrh7uRMY/

09/01/2025

Please check out the Gavinski Tutorials video to see some of the new features in StepPolyArp version 5.

StepPolyArp just got an incredible new free update (Jan 2025). In this video I go through all the main features of the update. 🟠 If you haven’t seen it yet,...

09/01/2025

https://apps.apple.com/app/steppolyarp/id1361313588?mt=8

Good news ! StepPolyArp goes to version 5!

Although version 5 focuses a lot on randomness and polyrhythm, many functions have been improved and added.

Each event can now have random behaviors, such as a range of pitch, gate, velocity generated randomly in real time. Each event can also be triggered according to the cycle, for example an event can occur once out of 3, or 4 times out of 7 according to a fully configurable pattern.

A new random generation panel allows you to create or modify a pattern by indicating rules.

At the polyrhythmic level, each line can have a time division different from the main division.

Each event can have its own gate, velocity and each line can now be muted.

In addition to the integrated musical scales, it is possible to easily create your own personalized scale.

The app and AUv3 works on iPhone, iPad and Mac.

The update is free from owners of StepPolyArp version 4 and later (2018).

18/11/2024

What will be the next update of StepPolyArp? Version 4.6 or version 5.0? What else to add? Lines with clock dividers? Lines with colors? More probabilities? A mix of all of these? Or just bug fixes and a version 4.5.2? Who knows? 😁