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 3.1.2

Synchronized section switching
Support for transposing instruments
Live preview of styles and tracks
Fix for saving keys with song/section
Optimized iPhone X layout
Audiobus update

Ratings and Reviews

4.7 out of 5
39 Ratings

39 Ratings

Yaya23456 ,

One of the best song writing/producing apps

I use Chordbot for a while now and it’s awfully useful for setting up an entire song quickly. Once the basic arrangement is complete , I just export the midi to a DAW and build on the arrangement in the DAW. I often end up using the piano parts in my produced songs. I would love to see an audio recording feature so I can lay down vocals when inspiration hits or when I don’t have access to my computer. I hope the developer will take time to update this great app with features like intros and fills and much more styles and patterns. I’d gladly pay extra for the update.

One thing I noticed is that the app seems to crash more often on the iPad than the iPhone. But those are rare occurrences though.

Overall, an incredible tool!

preemption ,

Like lego for song structures

It is deceptively simple, but like lego, you can build so much. Contrary to other apps, this one focuses on getting a big picture, from chord progression to overall mood. Like lego, you are limited by the lego pieces, but they are so you can build anything with it. The nice part is it’s very to hear how the pieces work, even if one doesn’t understand everything, they kind of connect anyway. This is why it’s great for sketching, or even stumbling upon ideas.

I imagine someone with a lot of familiarity with music theory can be a lot more intentfull, where as someone with no idea whatsoever can build things by trial and error, just like you’d build a car in lego, will be easier than handled steel and rubber.

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

App Privacy

The developer, Contrasonic AB, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


Contrasonic AB
19.1 MB

Requires iOS 11.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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