iOS + web · mobile-first
A transcription app that goes where you play.
Record the room, chart it on the walk home.
Most transcription tools are desktop software. Matra is an app: record straight into your phone at rehearsal, and the chart — chords, notation, sargam — is ready by the time you sit down. Same account on the web.
Free during early access · no card · private by default
It tells you when it isn't sure.
How it works
Record or upload
Your own playing, a voice memo, a hum — up to six minutes. The exact Token price is shown on the file before anything is charged.
Matra writes the chart
Chords, key, meter and melody — drafted in about a minute, with confidence on every chord.
Fix, then keep it
Correct anything with a tap; the engine learns from it. Export PDF, MusicXML or MIDI — free, and free again next time.
What you get
One recording in — a whole chart out.
- Record on iOS, or upload a recording on iOS or the web
- Chords, key and meter with per-chord confidence
- Staff notation and native sargam views (notation in beta)
- PDF · MusicXML · MIDI exports
- One account across phone and web
Questions, answered
Is there an iOS app?
Yes — Matra is mobile-first, with the same engine and account on the web. Record on your phone, view and transpose the chart on either.
Can I get the chords of a famous song?
Matra works on audio you have — your own playing, your recordings, your practice takes. We don't host or publish transcriptions of copyrighted songs. If you can play it or record it, Matra can chart it.
How accurate is it?
Chords and key are our strongest outputs and carry per-chord confidence so you always know what to trust. Staff notation is early access — honest but imperfect today, and improving as the engine trains on more recordings.
What does it cost?
Right now — nothing. Matra is free during early access (fair use: about 20 recordings a day), and every file still shows its real Token price so there are no surprises later. The meter: about 1 Token per 15 seconds, a typical 3½-minute recording ≈ ◇14. When billing starts, early-access musicians keep ◇600 — plus half price for 3 months and 25% off the rest of their first year. Sargam and notation views cost nothing, ever.
Is my audio private?
Yes. Uploads are private by default, nothing you make is published anywhere, and we never train on your audio.
Your first chart is on us.
600 Tokens free with an account — about 42 recordings. No card, no subscription, price always shown before you spend.
Free during early access · founders keep ◇600 when billing starts