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Chordbot For chordbot.net · tap to get the app
Get
The band in your hand

Build a chord progression. Hear a full band.

Chordbot turns a row of chords into a real arrangement in seconds. Add chords, pick instrument patterns, hit play — no instrument, no theory degree, no blank page.

60+ chord types
400+ instrument tracks
10+ yrs on the stores
How it works

Three moves from idea to arrangement

The whole loop is fast on purpose. You stay in the flow of writing instead of fighting menus.

01

Drop in chords

Tap chords onto the timeline by name. Browse 60+ types in any key and inversion — Chordbot can auto-pick the smoothest voicing so the changes never jump.

02

Pick the band

Choose comping patterns from 400+ mixable piano, guitar, synth, bass and drum tracks. Layer them until the groove fits the song you hear in your head.

03

Play, refine, export

Hit play and edit in real time. Split the song into sections, then export MIDI or WAV to finish in your DAW or loop it as a practice track.

Signature feature

Song-O-Matic beats the blank page

Stuck on the first chord? Pick a profile — pop, jazz or experimental — and Song-O-Matic generates a full progression with sections you can immediately edit.

It is not a black box that hands you a finished track. It is a starting point you own and reshape, which is exactly why it works for real songwriting instead of replacing it.

  • Three generation profiles tuned for different harmonic vocabularies
  • Generates structured sections, not just a loop
  • Every chord stays fully editable after generation
  • Pairs with auto-inversion so the result already sounds musical
SONG-O-MATICgenerate ▸
PopJazzExperimental
IntroCGAm
VerseAmFC
ChorusFGC
BridgeDmG7C
Who it's for

Made for people who write, not wait

Songwriters

Sketch harmony fast and hear it as a real arrangement before committing a single lyric.

Instrumentalists

Generate endless custom backing tracks to solo, comp and practice over at any tempo.

Producers

Block out a chord bed in minutes, export MIDI, and finish it properly inside your DAW.

Learners

Hear how inversions and extensions actually move — theory you can listen to, not just read.

Features

Everything in one compact engine

No subscription wall around the core. The free Lite build lets you use the whole feature set — saving and export are the paid extras.

60+

Deep chord library

From plain triads to AugAdd2 and Min7(#11) — every chord type, in every key, in every inversion. Manual slash chords or automatic smooth voicing that keeps progressions connected.

400+

Tracks

Dynamically mixable piano, guitar, synth, bass and drum patterns layered into 70+ comping presets.

Song sections

Verse, chorus, bridge — each with its own arrangement and mixer settings, repeatable across the track.

MIDI & WAV export

Send progressions to any DAW as MIDI, or bounce WAV. Audiobus and background playback included.

Offline & private

Works with no account and no connection. The developer's listing states it collects no user data.

Real-time control

Change chords, swap instruments and adjust tempo or reference pitch while it plays. The arrangement updates instantly, so experimenting never breaks your concentration — it is built to be fiddled with until something clicks.

Honest comparison

Where Chordbot wins — and where it doesn't

It is a focused harmony tool, not an all-in-one studio. Here is the straight version so you can decide before you download.

CapabilityChordbotSunoiReal Pro
Precise editable chord controlBest in classPrompt onlyGood
Custom instrument arrangements400+ tracksAutoLimited
Song-O-Matic auto generationYesYes (full song)No
Generates finished audio & vocalsNoYesNo
Stereo audio exportMono onlyYesN/A
Update frequencyInfrequentFrequentModerate
Works fully offline, no accountYesNoYes
One-time price optionYesSubscriptionYes

If you want a song generated for you with vocals, Suno is the better tool. If you want a real-sounding band that practices with you and stays exportable to a DAW, the trade-offs above are easy to live with. Reference: official Chordbot site.

From the stores

What long-time users actually say

★★★★★

Hard to believe an app around this long is still this useful. As a songwriter working on a musical it is exactly what I needed.

— App Store review
★★★★

Damn near perfect for songwriting. Honest gripe: I'd love different strum and drum patterns per section and a notification-bar play widget. Still amazing.

— Google Play review (4★, mixed)
★★★★★

If you compose or produce music I highly recommend this app. The controls are intuitive and it is genuinely worth the money.

— Google Play review
The story

A quiet tool that outlasted the hype

Chordbot is made by Contrasonic AB, a small independent Swedish studio. It first landed on the App Store back in 2011 and has been quietly serving songwriters ever since — a remarkable run for a single-purpose music utility in a market where most apps disappear within a couple of years.

That longevity is also a fair warning. Updates are infrequent. The interface shows its age in places, and a handful of users have reported occasional crashes that cost unsaved work — saving often and exporting MIDI early is genuinely the right habit here.

Audio export is mono, not stereo, which is the most common complaint from people who try to bounce a finished file directly. The realistic workflow is to treat Chordbot as a harmony sketchpad and move to a DAW via MIDI for anything you intend to release.

None of that has stopped it from staying useful. The chord engine is deep, the workflow is fast, and for the specific job of turning chords into a playable band it still holds up better than apps a decade newer. You can read the developer's own notes and audio demos on the official site.

Key facts

Developer
Contrasonic AB
Origin
Sweden
On stores since
2011
Platforms
iOS · Android
Chord types
60+
Instrument tracks
400+
Comping presets
70+
Free version
Chordbot Lite
Export
MIDI · WAV
Account needed
No
FAQ

Questions, answered straight

What is Chordbot and what does it actually do?

Chordbot is a songwriting tool and backing track generator. You add chords to a timeline, choose instrument patterns for piano, guitar, synth, bass and drums, then press play to hear a complete arrangement. It is built for sketching harmony and practicing, not for generating AI vocals or full produced songs from a text prompt, so think of it as a programmable band rather than a song-from-scratch generator.

Is Chordbot free to use?

There is a free version called Chordbot Lite that includes the full feature set so you can build and play anything you like. Saving songs and exporting MIDI or WAV are reserved for the paid Pro version. The recommended path is to try Lite first, confirm the workflow fits how you write, and upgrade only if you need to keep or export your work.

Can I export my chord progressions to a DAW?

Yes. The paid version exports MIDI and WAV, and supports Audiobus and background playback. MIDI export is the most useful path because you can drop the progression into Logic, Ableton, FL Studio or any sequencer and swap in your own instruments. Note that WAV audio export has historically been mono, so for stereo production the MIDI route is recommended.

Do I need to know music theory to use it?

No. You can browse more than 60 chord types by name, let Chordbot pick the smoothest inversion automatically, and use Song-O-Matic to generate a starting progression in pop, jazz or experimental styles. It is genuinely useful as a learning tool because you hear how chords move in context, but it does not require you to read notation or play an instrument.

What is Song-O-Matic?

Song-O-Matic is the built-in automatic song generator. You pick a profile such as pop, jazz or experimental and it produces a full chord progression with sections you can then edit. It is a fast way to break a blank-page block, after which you tweak chords, swap instruments and adjust the arrangement until it sounds like your own idea.

Who makes Chordbot?

Chordbot is developed by Contrasonic AB, an independent Swedish software studio. It has been on the App Store and Google Play for well over a decade, which is unusual longevity for a music utility. Updates are infrequent, but the core engine is stable and the developer responds to bug reports at the published support address.

What are the main limitations I should know about?

Honest trade-offs: WAV export is mono rather than stereo, updates are rare so newer feature requests can sit unanswered, the virtual instrument sounds are good but not on the level of professional sample libraries, and a small number of users have reported occasional crashes that lost unsaved work. Saving often and exporting MIDI to a DAW mitigates most of these.

How is Chordbot different from Suno or AI song generators?

Suno and similar tools generate finished audio, including vocals, from a text prompt. Chordbot does the opposite job well: it gives you precise, editable control over harmony and arrangement so you own every chord choice. If you want a song handed to you, use a generator. If you want a fast, controllable harmony sketchpad and practice band, Chordbot is the better fit.

Does Chordbot work offline and collect my data?

Chordbot works fully offline and requires no account to create and play music. According to the developer's store listing the app does not collect user data. As always, review the current privacy policy on the official site for the definitive and most recent statement before relying on this for sensitive use.

Turn the chords in your head into a band you can hear.

Free to try, full feature set in Lite, exports when you're ready. Grab it and build your first progression in under a minute.