Chordbot is a songwriting tool / electronic backup band that lets you create and play complex chord progressions in different arrangements easily. Just add some chords, select a comping style and hit play.

Use it for songwriting experiments, to create backing tracks for practicing solos, or just for fun. Easily create arrangements and mixes by selecting from hundreds of piano, guitar, synth, bass and drum tracks.

This is the full version of Chordbot with all features enabled. There is also a free evaluation version (Chordbot Lite) with disabled save/export features that you could/should try before buying the paid version.


* 60+ chord types
Including classics like AugAdd2 and Min7(#11), in all inversions.

* 70+ comping style presets
Simple but usable arrangements that won't get in your way.

* 400+ instrument tracks
Individually mixable dynamic instrument tracks that can be combined to form unique comping styles.

* Inversion control / slash chords
Manually select chord inversions, or let Chordbot select the smoothest inversion automatically.

* Song sections
Songs can be structured into repeatable sections (verse, chorus, etc). Each section can have its own comping style/arrangement.

* MIDI/WAV export and background playback
Refine your compositions in a DAW/MIDI sequencer or play along with a virtual instrument

* Song-O-Matic
Automatic song generator with pop, jazz and experimental profiles.

See for more information and audio demos.

Please report all bugs to:

What’s New

Version 3.1.2

Synchronized section switching
Support for transposing instruments
Live preview of styles and tracks
Fix for saving keys with song/section
Optimized iPhone X layout
Audiobus update

Ratings and Reviews

4.1 out of 5
10 Ratings

10 Ratings

sj1001 ,

Great little app

If you are looking for a way to setup a chord progression to practice noodling along to, this is perfect.
UI is a bit different from your usual iPhone app, but its feature rich and does the job perfectly.
Try the free one first to see if you can find your way around ok.

notbas ,


There's something rather special about the music Chordbot produces... atmospheric, powerful and haunting. The presets are superb and the app is really easy to use. The MIDI files transfer perfectly into DAWs and, if you obtain the original samples (details in the manual), it's easy to continue developing the ideas, there. Customer support is exceptional, too.

TheManBehindTheBlind ,

Very very good

Brilliant layout
Easy to use
Dedicated developer
Best chord tryer-outer
Best chord suggester
Recommended, and...

App Privacy

The developer, Contrasonic AB, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Contrasonic AB
19.1 MB

Requires iOS 11.2 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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