# C&O Chord Machine — Chord pads, samples & MIDI

> Chord pads, samples & MIDI (iPhone/iPad app by Joao Dias.)

- Source: https://appshunter.io/ios/app/c-and-o-chord-machine/id6819081781 (this page in markdown: same URL + `.md`)
- Developer: [Joao Dias](https://appshunter.io/developer/1609661240)
- Category: Music
- Price: $8.99
- Age rating: 4+
- Requires: iOS 16.0 · 24 MB
- Released: 2026-10-29
- Data updated: 2026-11-07

## What is C&O Chord Machine?

Seven pads. Chords for your MIDI gear.

Play chord progressions on iPhone or iPad, send the same notes to your synths, and keep the takes you love. Hardware-inspired controls, built-in sounds and no subscription.

PLAY THE HARMONY
Explore 12 keys, four scales, triads, sevenths, ninths and suspended chords. Choose Root, Smooth or Open voicings. Shape chords while playing with major/minor, sus4, seventh and ninth modifiers. Freeze a chord to keep it sounding; tap again to retrigger.

GIVE IT MOVEMENT
Strum chords down, up or alternately, with adjustable spread. Explore four whole-chord Pattern styles with eight variations each and a subtle built-in groove. Change Pattern, Variation, Rate and Gate from Live view, or hide the controls and focus on playing. The right two buttons change octave while you play.

FIND YOUR SOUND
Choose E Piano, steel-string A Guitar, nylon-string N Guitar, E Guitar or eight synth sounds. Each new instrument has its own patterns. Add tremolo to E Piano or choose Clean, Crunch or Drive on E Guitar. Four repeating drum kits provide accompaniment. Drums play independently of your chord presses. Add a bass note beneath your chords with seven sounds: Sub, Round, Pluck, Fuzz, Acid, Rubber and Metal. Switch bass off whenever you want.

CONNECT YOUR GEAR
Send the same chord and bass notes you play to compatible MIDI instruments. Keep bass on the chord channel or choose a separate channel. Follow incoming MIDI clock for rhythmic playback. A compatible cable or adapter may be required. Drums stay local.

KEEP THE IDEA
Record performances as timed note events, including bass, then replay them through your chosen sound and MIDI output. Name and revisit saved Takes. Takes are not rendered audio recordings.

Musical playback works offline. No account required. Built-in manual and email support.

By Carne & Osso.

## Is C&O Chord Machine safe?

Not enough ratings yet to assess C&O Chord Machine.

## Is C&O Chord Machine legit?

C&O Chord Machine appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for C&O Chord Machine is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.4.0 — 2026-11-05

Four new sounds are on the Sound knob. Play ringing E Piano chords with optional tremolo, fingerpick a nylon-string N Guitar, strum steel strings on A Guitar, or turn up the amp on E Guitar. Each has its own playing patterns. In Live, the guitarist plays along with the guitar sounds.

### 1.3.0 — 2026-11-01

Add a bass line beneath your chords. Choose from seven bass sounds, from a clean Sub to Fuzz, Acid, Rubber and Metal, and send bass to its own MIDI channel.

Patterns now have a subtle, built-in groove. Eight new pixel-art scenes reward your chord progressions, with more forgiving triggers so they are easier to discover.

### 1.2.0 — 2026-10-31

Play Chord Machine across the fold on iPhone Duo. In tabletop position, the screen and knobs sit above the hinge and the pads sit below. Turn it like a book for a nine-pad bank on the right. Held and frozen chords keep playing as the layout changes.

### 1.1.0 — 2026-10-30

Strum your chords. Explore 32 whole-chord Pattern variations. Shape them without leaving Live view.

Also new: Pluck, Bell and Organ synths; House and Break drum kits; clearer Live readouts; and saved System settings.

### 1.0.1 — 2026-10-30

No release notes.

## More apps by Joao Dias

- [Sipster coffee](https://appshunter.io/ios/app/sipster-coffee/id1609661238)
- [C&O Recorder](https://appshunter.io/ios/app/c-and-o-recorder/id6829194584)

All apps by Joao Dias: https://appshunter.io/developer/1609661240

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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 2026-11-07.*