Song Cage, in your pocket.
The free songwriting app for iPhone and Android. Capture a melody, a lyric, or a chord idea the moment it strikes, then finish the song on the web or desktop.
Download. Capture. Finish anywhere.
The phone is where the idea starts. The full song comes together later on the web app or the desktop editor.
Download it free
Get Song Cage from the App Store or Google Play. No account, no card, and nothing to buy inside it. It opens straight to the Record tab.
Capture on the go
Hum a melody into a voice memo, type the line that just landed, or sketch a chord progression with Roman numerals in your key. Everything saves locally and works offline.
Finish in the web app
Sign in with the Song Cage licence and your ideas land in the Ideas inbox of the web app. Pick up on the big screen, where you turn a voice memo into a melody, add chords, and arrange the whole song.
Built to capture, not to arrange.
Song Cage Mobile is a free songwriting app for iPhone and Android, built for one job: capturing a song idea before it slips away.
Open it and you land on five tabs. Record a voice memo, write Lyrics and put chords on the words, try chords in Jam, and an Ideas tab keeps every fragment together as one idea; a Songs tab shows the finished songs you built on the desktop, ready to play from anywhere. The capture side works fully offline with no account, so you can capture a melody on a plane or a lyric on the walk home and trust it will be there later.
The phone is the capture surface, not the full studio: there is no timeline, no export, and no DAW on the phone, and that is the point. When you are ready to build the idea into a finished song, sign in and it syncs to the web app and the desktop editor, where the melody, chords, and arrangement come together.
- Record Tap once and hum, sing, or play the part before it leaves your head. Takes are dry by default; tap Play to sing over your own chord loop when you want it.
- Lyrics with word tools A clean pad for verses and choruses, with rhymes, slant rhymes, and synonyms one tap away. Tap a word and it copies to your clipboard, ready for your line.
- Jam A chord playground: try a progression without touching your song. Each chord shows its Roman numeral in your key, suggestions rank by voice leading (never a canned, pre-built progression), and you shape voicings on a guitar or piano.
- Ideas Every capture is saved as an idea that can hold a voice memo, a lyric, and a chord sketch together. Tap New idea to start a fresh one from any tab; browse, archive, and tidy the rest. Nothing is lost.
- Offline and account-free The whole app works with no sign-up and no connection. Capture on a plane or backstage; it stays on your phone until you choose to sync.
- Sync and finish on desktop Sign in and your captures appear in the web app and the desktop editor, where you detect the melody from a memo, harmonize it, and arrange the full song.
- Songs The songs you finish in the web app sync back to the Songs tab, so the arrangement you built at your desk rides along in your pocket. Tap Play and the line you're on lights up.
- Autoscroll Switch it on and the chart scrolls itself in time with the song, a hands-free teleprompter for playing live.
Runs on the iPhone or Android you already carry.
iPhone & iPad
- iOS 15 or later
- iPad opens the full editor
- Free on the App Store
Android
- Android 7 or later
- Tablets run the phone layout
- Free on Google Play
Nothing else required
- No account: use the whole app as a guest
- No connection: captures are stored on your phone
- No ads and no in-app purchases
Sign in when you want your captures backed up to your account. With the Song Cage licence they land in your Ideas inbox in the web app, where you turn a voice memo into a melody and arrange the full song.
Mobile app guideFree to capture. Forever.
The Song Cage app is completely free on iPhone and Android: no account, no ads, and nothing to buy inside it. When you want to finish a song, the Song Cage licence brings your captures into the web app.
Also on Google Play
Start it in the desktop app or plugin · the mobile app stays free either way
Common questions.
How is the mobile app different from the web and desktop apps?
The phone app is for capture, not the full studio. It gives you five tabs (Record, Lyrics, Chords, Ideas, and Songs) to capture an idea fast and keep it with the rest. The web app and the desktop app have the full canvas: a timeline, melody detection, export, and arrangement. You capture on the phone and finish on the big screen. For the full walkthrough, read the mobile app guide.
Is it free?
Yes, completely. Song Cage for iPhone and Android is free to download and free to use, with no account required, no ads, and no in-app purchases. The Song Cage licence is optional: it brings your captures into the web app’s Ideas inbox and unlocks the desktop app and the plugin.
Does it work offline?
Yes. Record voice memos, write lyrics, and sketch chords with no connection at all. Everything is stored on your phone. When you sign in and reconnect, your ideas sync automatically.
Do I need an account?
No. You can use the whole app as a guest. Sign in when you want your captures backed up to your account, and buy the Song Cage licence when you want them in your Ideas inbox in the web app, where you finish them.
Do my captures reach the web app and the desktop app?
Yes, with the Song Cage licence or during the free 14-day app trial. Sign in and your captures appear in the Ideas inbox on app.songcage.com, in the desktop app and in the plugin, where you can pull a lyric, chord run, or melody into a full song.
Can I write a full song on my phone?
The phone is built for capturing ideas, not arranging them. There’s no timeline, export, or DAW on the phone, by design. To build an idea into a finished, arranged song, open it on the web or the desktop app.
Which phones and tablets are supported?
iPhone on iOS 15 or later and Android phones on Android 7 or later. On an iPad the same app opens the full Song Cage editor, where Free covers one song, a 14-day trial starts in the app, and the licence unlocks the rest. Android tablets run the phone layout.
Does it use AI?
No. Chord suggestions come from music theory rules: voice leading and how each chord sits in your key. Rhymes and synonyms are dictionary lookups that ship inside the app and work offline. Song Cage never auto-writes your lyrics or melodies. The creativity stays with you. Read more about the no-AI philosophy →
Free on iPhone and Android
Capture your next song the moment it arrives.