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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 iPhone/iPad. 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.

Try the free version Chordbot Lite before buying. It has all the features of the full version but with save/export disabled.


* 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 2.15

Fix for chord preview bug. Better support for non-latin text and filenames.


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Customer Reviews

Best, easiest, and fastest way to make backing tracks

I needed an easy way to make modal backing tracks in all keys because it would have taken forever to make them myself. This app has many options and sounds good. You also have the ability to have a bass note of your choosing under the chord which is essential when creating modal jam tracks. I'm very please to have found this app.

Great app

I use it everyday for putting together backing tracks for my solo act. Has all the chords I use for jazz and blues backing. Great for exchange of ideas with my band too. I'm able to put together grooves in less than 15 minutes. Great app. Look forward to improvements like addition of eighth notes.

helpful app

I find this to be an essential app, but I had an earlier version and I liked that one much better. I wish the comping styles were broken down into sections and guitar/piano, to make it easier to find the right style. Anyway I don't know of any other app that does what this app does, but I still wish it cost less.

View In iTunes
This app is designed for both iPhone and iPad
  • $4.99
  • Category: Music
  • Updated: Oct 17, 2014
  • Version: 2.15
  • Size: 12.1 MB
  • Language: English
  • Seller: Contrasonic AB

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

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