# Arch Carrier Instrument Lab — Draw shapes. Play their sound.

> Draw shapes. Play their sound. (iPhone/iPad app by Jeroen Rombouts.)

- Source: https://appshunter.io/ios/app/arch-carrier-instrument-lab/id6809535992 (this page in markdown: same URL + `.md`)
- Developer: [Jeroen Rombouts](https://appshunter.io/developer/1863358112)
- Category: Music, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 4 MB
- Languages: American English
- Released: 2026-09-15
- Data updated: 2026-09-21
- User reviews in markdown: https://appshunter.io/ios/app/arch-carrier-instrument-lab/id6809535992/reviews.md

## What is Arch Carrier Instrument Lab?

Draw a shape. Tap it. Hear it ring.

Arch Carrier turns drawn shapes into a playable physical modelling instrument. A ring, a plate and a tuning fork each have their own resonances. Change the outline, cut a hole or move your strike, and explore how the sound changes.

PLAY AND SHAPE
• Strike up to three resonant bodies by touch.
• Add and subtract material without degrading untouched contours.
• Watch sand trace nodal patterns, and tilt your device to move it.
• Start from five seeds or save your own instruments.

TUNE AND SEQUENCE
• New shapes start at A3, 220 Hz.
• Tune by frequency, semitone or octave, with note names and cents.
• Audition a tuning or hear the natural model.
• Place four mallets and set strength and modal focus for each step.
• Choose seven mallet speeds, from 0.25× to 2×.
• Record looping mallet motion, synchronized to each rhythm.

MIDI PATHS
• Add editable traces with independent MIDI note ranges and channels.
• Each key selects a strike position; velocity sets its strength.
• Play from a connected MIDI keyboard while Arch Carrier is in the foreground.
• Show the paths when you need them, then hide the overlay while MIDI keeps playing.

KEEP YOUR INSTRUMENT
• Save shapes, tuning, rhythms, motion, tempo, damping, tone and MIDI mappings together.
• Resume your last instrument without automatic playback.
• Record stereo 24-bit WAV files and export them to Files or other apps.

Free. No account, advertising or in-app purchases. Designed for iPhone and iPad.


## Version history (last 1 release)

### 1.0 — 2026-09-15

No release notes.

## More apps by Jeroen Rombouts

- [SimpleSSTV](https://appshunter.io/ios/app/simplesstv/id6756872709)
- [SimpleCW: Morse Decoder](https://appshunter.io/ios/app/simplecw-morse-decoder/id6759712691)
- [Pagina100 - Teletekst browser](https://appshunter.io/ios/app/pagina100-teletekst-browser/id6761632609)
- [SimpleFT8](https://appshunter.io/ios/app/simpleft8/id6768739415)
- [Bitpop Lo-Fi Camera](https://appshunter.io/ios/app/bitpop-lo-fi-camera/id6801849620)

All apps by Jeroen Rombouts: https://appshunter.io/developer/1863358112

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-21.*