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 3.0.5

Export by email is back again along with some other bug fixes

Ratings and Reviews

4.4 out of 5
8 Ratings

8 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.

Paul075432 ,


You won't believe how good this app is as a songwriting/practice tool until you try it! I would give up all my other iOS apps if I had to (including my train time checker) just to keep this one.

Whilst there are a few bugs that need to be ironed out these do not affect how useful it is and I expect these will be fixed in a subsequent update. More importantly, it improves considerably on the previous version which was already very good, but had some limitations.

I had given up hope that Chordbot would be developed further, but after this major update hopefully users can look forward to further enhancements in future. Brilliant!


Contrasonic AB
34.2 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© 2011 Contrasonic AB


  • Family Sharing

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

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