Create and play complex chord progressions easily. Hundreds of mixable instrument patterns and styles.

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 3.1.4

Audiobus 3 update
Various bug fixes
Support for older iOS versions

Ratings and Reviews

4.3 out of 5
3 Ratings

3 Ratings

rufus2tone ,

Thank you for GREAT tool

I’ve been using this constantly for 4 years in my guitar lessons as I learn ever more complex songs. Metronome times a thousand. Can build any song in seconds. Thanks very much!

mr_donald ,

Well conceived, excellent value, works perfectly

This app is precisely what I went looking for, only better. If you're a songwriter, it is perfect for sketching out & experimenting with chord progressions. I had tried other more fully-featured sequencing apps but they were all just too complicated & time-consuming for the kind of "sketching" I wanted to do. Chordbot nailed it in terms of intuitive interface, fast, smooth performance, more than enough stylistic options (in the paid version) to help you visualize the song you have in mind to create.

Even the free Lite version is excellent and completely usable as-is. I was so grateful for having found it that I wanted to buy the full version in part just to thank and reward the developer. The additional functions in the paid version are well worth the price.

Unlike some of the other reviews, I personally would not want to see more features crammed in. As-is, it works perfectly well as a songwriter's companion (or as a backup band for improvising over) and I'd hate to see it get bogged down and more complicated.

Joeybmpls ,

Good but some weird hiccups

I like the layout, like the ease of use. The multiple instruemnts help write chords, since writing for piano is different then guitar. I love the support and the cheap price. However, there are a few things missing that other apps do and some weird, albeit unneccesary hiccups. Not being the best on the spot music theorist, it would be nice to know chords are in and out of scope of whatever key id like to record in. Suggester tells me after a few chords which keys my chords would fit in, restricting me from being too outside the box progression wise. Also, I understand after talking to a very quick and responsive help support, big big plus, that I have 9 tracks to work with, being able to add many layers of instruments to write an entire ensemble, however, I am annoyed that when I export my midi track all 9 tracks, even if I didnt use them, export. I.e. I write a simple C maj to D Maj chord progression in a piano tone, I export it as a midi file, when I import that midi file in Ableton or Logic it adds 9 seperate tracks, in fact in logic it creates 8 extra virtual instruments shutting down my workflow, Ableton is easier to delete. But why? Why does it always have to import 9 midi tracks, 8 of which that are empty?

App Privacy

The developer, Contrasonic AB, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

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

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