Writing chord progressions shouldn’t require a music degree — or a £549 synth. Here are the best Android apps for generating chords and sending them straight to your DAW or hardware.
Updated March 2026
The problem with writing chords on mobile
You’ve got a melody in your head. You know it needs some lush harmony underneath it. But you’re on the bus, or you’re away from your studio, or you just don’t have the keyboard skills to voice jazz chords on the spot.
This is a real and common bottleneck for songwriters and producers. Music theory is deep. Voicing chords well — so they flow smoothly from one to the next — is a skill that takes years to develop. And yet harmony is often the thing that makes or breaks a song.
Historically, your options have been: learn piano properly (great, but slow), buy expensive hardware like the Telepathic Instruments Orchid (£549+), or use desktop plugins like Scaler 3 ($99) that chain you to your DAW.
But what if your Android phone could do it?
There’s a growing category of apps that help you generate chord progressions on Android. Some use AI. Some use music theory databases. Some send MIDI in real time so you can control your synths directly. They’re not all built the same, though — and the differences matter depending on how you work.
Let’s break them down.
What to look for in a chord generator app
Before diving into specific apps, it helps to know what actually matters:
Real-time MIDI output vs. export-only. Some apps generate a chord progression and then export it as a .mid file. Others send MIDI notes in real time over USB, letting you play chords into your synth or DAW as a live instrument. The difference is huge for creative flow. Export-only means you’re always working in two steps: generate, then import. Real-time means you’re playing.
Voice leading. This is the difference between chords that sound “correct” and chords that sound musical. Good voice leading means each note moves the minimum distance to the next chord, creating smooth, connected harmony rather than blocky jumps. Most apps don’t do this at all.
Nashville Number System / scale degrees. If the app shows you chord I, IV, V, vi rather than C, F, G, Am, you can switch keys instantly without relearning anything. This is the approach used by professional session musicians in Nashville and beyond.
USB MIDI connectivity. Can you plug your phone into your computer or hardware synth via USB and have it recognised as a MIDI device? Android has supported this natively since version 6.0 (Marshmallow), but not every app takes advantage of it.
The apps — compared
Flowr turns your phone into a chord controller. It has two main interfaces: Songwriter Mode, which gives you Nashville-style scale degree pads (I, ii, iii, IV, V, vi, vii°), and the Petal Wheel, a circle-of-fifths layout for navigating harmonic space visually. Tap a pad and Flowr sends a full, voice-led chord over USB MIDI to your DAW or synth — instantly.
What sets Flowr apart is its voice leading engine. When you move from chord to chord, the individual notes move as little as possible, just like a good keyboard player would voice them. You also get a quality toggle to flip chords between major and minor, and gyroscope control for expressive modulation.
Chordbot is one of the longest-running chord apps on Android and remains popular for good reason. It gives you 60+ chord types across all keys, 400+ instrument patterns, and a “Song-O-Matic” feature that auto-generates progressions in pop, jazz, and experimental styles. You build a progression, audition it with built-in sounds, then export as MIDI or WAV.
The limitation is workflow. Chordbot is a backing track generator, not a controller. You can’t plug your phone into a synth and play chords live. You build offline, export the file, then import it into your DAW. For quick sketching that’s fine, but it breaks the creative loop if you want to perform or jam.
This app uses AI to generate chord progressions matched to genres and moods — pop, R&B, afrobeat, EDM, trap, and more. You pick a key and scale, choose a style, and it generates a progression with a piano roll preview. You can add melodies or rhythm patterns with one tap, then export the result as a .mid file for your DAW.
It’s a solid brainstorming tool when you’re stuck, and the genre-specific generation is genuinely useful for getting out of harmonic ruts. However, like Chordbot, it’s an export-only workflow with no real-time MIDI output or USB connectivity.
Chord ai is different from the other apps on this list — it’s a chord detector, not a chord generator. Point it at any song (or play something live) and it identifies the chords in real time using AI. It boasts 500,000+ users and strong ratings for its accuracy with complex chords including sevenths, diminished, and altered dominants.
It also includes audio-to-MIDI conversion based on Spotify’s Basic Pitch research. This makes it a useful companion tool: figure out the chords of a song you love with Chord ai, then recreate and modify the progression in a generator app.
A more experimental take on chord detection. It uses your device’s microphone to identify chords in real time, displaying them in large letters on screen. It also attempts real-time audio-to-MIDI conversion, though the developer openly acknowledges this is experimental — it works best with solo instruments rather than full mixes.
Detection is limited to major, minor, 5th, and 7th chords. It’s a useful learning tool rather than a production tool.
Side-by-side comparison
| App | Price | Real-time MIDI | Voice Leading | USB Out | Chord Generation | Scale Degrees |
|---|---|---|---|---|---|---|
| Flowr | £5.99 | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chordbot Pro | ~£3.50 | ✗ | ✗ | ✗ | ✓ | ✗ |
| AI Chord Generator | Free | ✗ | ✗ | ✗ | ✓ | ✗ |
| Chord ai | Free+ | ✗ | ✗ | ✗ | ✗ (detection) | ✗ |
| Chord Detector | Free | ✗ | ✗ | ✗ | ✗ (detection) | ✗ |
Desktop alternative worth knowing about: Scaler 3 ($99) by Scaler Music is the industry-standard chord progression plugin for desktop DAWs. It offers over 1,000 chord sets, voice leading, modulation suggestions, and multitrack output. If you work at a desk, it’s excellent. But it requires a full DAW setup — you can’t use it on the bus or plug it into a hardware synth. That’s the gap mobile apps fill.
What about hardware chord generators?
It’s worth addressing the elephant in the room: dedicated hardware.
The Telepathic Instruments Orchid, created by Tame Impala’s Kevin Parker, is a 12-key chord-generating synth with built-in sounds, effects, and MIDI output. It’s beautifully designed and genuinely inspiring to play. It’s also £549 / $649, frequently out of stock, and Telepathic Instruments has shut their store until April 2026 while they plan what’s next.
The Pocket Audio HiChord is a more affordable alternative at $249. It uses a Nashville Number System approach with seven chord buttons and a joystick for chord modifications (minor, sus4, 7th, 9th). It also has a built-in synth engine and MIDI output. But at $249, you’re still paying a significant premium — and waiting for shipping, since it’s often on pre-order.
Both of these are fantastic instruments. But if you’re primarily looking for a MIDI chord controller — something to send chords to the synths and DAW you already own — spending hundreds on dedicated hardware isn’t the only path. An Android app that costs less than a coffee can get you there today.
Example workflow: phone → synth in under 60 seconds
Here’s what a real-time chord controller workflow looks like using Flowr as an example:
Set your Android USB mode to “MIDI”. Your phone appears as a class-compliant MIDI device — no drivers needed.
Select your key and scale. The pads automatically show the diatonic chords for that key as scale degrees (I, ii, iii, IV, V, vi, vii°).
Each tap sends a full, voice-led chord over USB MIDI. Your synth or DAW receives the notes instantly. Hit record in your DAW and start writing.
Use the quality toggle to flip major ↔ minor. Switch to the Petal Wheel for circle-of-fifths navigation. Tilt your phone for gyroscope-controlled modulation. Every change sends MIDI in real time.
Compare this to an export-based workflow: generate a progression → export .mid → transfer to your computer → import into your DAW → audition with your chosen synth → decide you want to change one chord → go back to the app and repeat. The real-time approach collapses all of that into a single, continuous creative session.
Our recommendation
If you want to sketch chord progressions offline and export them as MIDI files, Chordbot Pro is a well-established choice with a huge library of chord types and instrument patterns. It’s been around for years and does its job well.
If you want AI-generated progressions matched to specific genres, the AI Chord Generator is worth trying — especially since it’s free.
If you want to detect chords from existing songs, Chord ai is the best in class.
But if you want to play chords in real time — to use your phone as a genuine MIDI chord controller that sends voice-led harmony straight to your synth or DAW over USB — Flowr is currently the only Android app that does this. It combines Nashville-style scale degree pads, a circle-of-fifths interface, voice leading, and real-time USB MIDI output in a single app for £5.99.
For context, the closest hardware equivalent (the Orchid) costs 90× more. The closest desktop software (Scaler 3) costs 16× more and requires a full computer setup. Flowr won’t replace either of those tools for power users — but for songwriters who want instant harmony on the go, it fills a gap that nothing else on Android currently does.
Ready to try instant harmony on your phone?
Flowr is available now on the Google Play Store. No subscription, no ads — just a one-time purchase.
Get Flowr on Google Play — £5.99This article was last updated in March 2026. App prices and features may change — check each app’s Play Store listing for the latest information. Flowr is developed by an independent developer.