Hum it in.
Get the chart.
A rough recording of your song becomes a session-ready Nashville Number chart, then straight into Logic Pro. On your phone. Fixed in taps.
iPhone · iOS 27 · free during beta · your audio never leaves your phone.
Live demo. Tap the key to transpose, ▶ to play along.
Your best ideas show up as a hum in a voice memo. Then they sit there.
Capturing the idea is easy, you already do it. Writing it down is the chore: keys, structure, the chords that almost work. Changes does that draft in seconds, so the part you love stays the part you do.
Three steps, all on your phone.
Record or import
Play it, hum it, or drop in a voice memo. A rough take is all Changes needs.
Changes writes the chart
Key, tempo, structure, chords. A Nashville Number chart, computed entirely on-device.
Fix it, then deliver
Tap to fix any spot. Share a clean PDF to your band, or open the MIDI in Logic Pro to build a session.
Built like a musician's tool, not a transcriber.
Nashville Numbers
Transpose-proof. Your band reads one chart in any key, no rewrites when the singer moves it.
On-device & private
Your music never leaves your phone. No upload, no account, nothing to opt out of.
A great draft, fixed in taps
Not a promise of perfect. It flags the spots it's unsure of, and you tap to correct them.
Plays along
Hear your recording with a marker following the chart. Tap a bar to jump straight there.
Built for Logic Pro
Exports a MIDI that opens in Logic. Run Analyze for a Chord Track, then add Session Players that follow your changes.
For anyone who works in number charts.
From hum to chart paper.
Changes marks the one bar it wasn't sure about. Tap it, pick the right chord, done.
Singer wants it up a step? The numbers don't move, the letters do. One chart, every key.
A marker sweeps the chart in time with your take. Tap any bar to jump there.
Exports a MIDI you open in Logic. Run Analyze for a Chord Track, then add Session Players.
Buy it once. It's yours.
Free for everyone during the beta. At launch, a single unlock turns on the pro features. No subscription, and never a charge per song.
Capture ideas and read the chart. Yours to keep, on device.
- ✓Record, hum, or import a rough take
- ✓A full Nashville Number chart: key, tempo, structure, chords
- ✓Play-along with a marker that follows your changes
- ✓Transpose to any key, instantly
- ✓Keep up to 3 projects on your device
$14.99 for beta-list members, a thank-you for being early.
- ✓Export a MIDI straight into Logic Pro
- ✓Share a clean chart PDF with your band
- ✓Unlimited saved projects
Get on the beta list.
We'll send a TestFlight invite when it opens. Collecting email only. No spam, no account.
iPhone, iOS 27. Free during beta. Built for original songs. A hum gets harmonized, not detected. Prefer email? Reach us here.