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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 app I've ever purchased

This app is an amazing tool for creativity. As a musician I have dropped a decent amount of money on related apps but this has been my number 1

1. Versatile: the chord selection is awesome (major, minor, 7th, aug, sus, dim, +many more)
2. You can export files
3. Random chord generator for those moments of "writers block"

1. Needs an "undo" button" (very easy to accidentally edit all sections of your song when you meant to only edit 1)
2. Guitar sounds are a bit weak, I never use them, but there are plenty of other sounds o work with so no biggie.
Despite those I still rate this app 5 stars, this has been a big tool for inspiration.

Tip: save often! Save often! Save often! And wouldn't hurt to save 2 files of the same song.

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.

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

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

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