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

4.8 out of 5
22 Ratings
22 Ratings
Rabbi Neb ,

Great Tool, but can be Buggy!

I bought this app last week. I like it a lot. Lots of chords to experiment with, and that's great, but I have one problem. When adding another chord to the song structure, it changes other chords along with it! That's a bummer. This happens almost every time. I have had to save after every chord addition. Why is it doing this? Please fix it and five stars for sure. This also has some nice sounds without having to go Midi and that's a plus too! Oh and a way to quickly undo would also be a plus. Thanks for your quick attention. Nebben

Baerz ,

Needs some more harmonic systems to work with.

Some augments chords and some minMaj7 chords, just for examples, should really be included to make use of harmonic minor and melodic minor systems. Also, no b9s or b13s, etc.? I get that they are trying to keep it clean, but there are ways to keep it simple while still allowing important harmonies in contemporary harmony (and classical, for that matter). I have a feeling people that want to use this are trying to expand their palette, rather than practice the same old same old.

markoscott ,

Best songwriting tool ever!

Seriously, this is awesome. The only thing that would make it better, and this doesn’t subtract any stars, is if there was a keyboard representation of the notes in the chords so you could more easily visualize how the non-root notes of the chords are progressing. Of course you can transfer it to a DAW for this, but it would be nice for the writing process.


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

    With Family Sharing set up, up to six family members can use this app.

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