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By Contrasonic AB

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Chordbot is a songwriting tool / electronic accompanist that lets you create and play complex chord progressions easily on your phone / tablet. 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/AudioCopy export and Audiobus support
Refine your compositions in a DAW/MIDI sequencer or stream live audio directly to other Audiobus-compatible apps.

* 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 in Version 2.11

Minor update:
10 new mixer presets
60 new instrument tracks
Audiobus & AudioCopy updates
Various bug fixes


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Customer Reviews

Fantastic app

This app allows you to quickly create chord progressions as well as compose great sounding songs. It has some minor bugs such as resetting some of the previously entered chords while making edits to a track.

The interface provides quick navigation to all the features, but you need to read the documentation to understand all the sections that the program offers.

The ability to export both a MIDI file as well as a WAV file is very nice.

I would easily pay 5 times the cost of this program.

Great and easy to use

This is a fantastic app if you are looking to practice soloing over chord changes. You just program the chords in whatever configuration you'd like and start playing... It's that simple. For jazz players, this is superb. It not only lets you use seventh chords in any key, but also provides extensions, all the inversions, and even some altered chords to challenge your playing. Moreover, you can choose from dozens of styles, from Latin to electronica... Just a great, useful tool.

Adore this app

I am so blown away by this app -- the musicality built into this program. It is sooo useful to the songwriter. And the variety of comping styles is amazing. An incredible amount of homework was done for sure! One ask: ability to drag chords around to easily change the progression.

View In iTunes
This app is designed for both iPhone and iPad
  • $4.99
  • Category: Music
  • Updated: Nov 01, 2013
  • Version: 2.11
  • Size: 13.3 MB
  • Language: English
  • Seller: Contrasonic AB

Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

Customer Ratings

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