Leopold - Sheet Music & Midi
Piano to sheet music & MIDI
$5.99 · Designed for iPad. Not verified for macOS.
Play the piano, watch it become sheet music and or MIDI in real time. Export MIDI or MusicXML, 100% on-device transcription — nothing you play ever leaves your phone.
Leopold listens to you play piano and turns it into real sheet music and MIDI — entirely on your device, entirely offline.
Sit down at any piano or keyboard, tap record, and play. Leopold's on-device transcription model listens through your phone's microphone and converts your performance into notes as you play. When you're done, you get a full piano-roll transcription that you can edit, clean up, and export as sheet music, MIDI, or MusicXML.
HOW IT WORKS
• Tap New Recording, set your time signature and tempo (with an optional built-in metronome and click track), and play.
• Leopold's on-device model transcribes pitch and timing directly from the audio — no internet connection required, no account, no upload.
• Review the transcription in a piano-roll editor: select, move, quantize, or delete notes to clean up the result.
• Flip to Sheet Music view to see your performance rendered as standard notation.
• Export to MIDI (.mid) for use in your DAW or notation software, MusicXML (.musicxml) for Sibelius/MuseScore/Finale, or a PNG image of the rendered sheet music.
• Save projects to your library and come back to edit them anytime.
BUILT FOR PRIVACY
Leopold does all of its transcription work on your device. Your playing is never uploaded, streamed, or sent anywhere — there are no accounts, no cloud processing, and no network requests involving your audio or your music. Everything — recordings, transcriptions, and saved projects — is stored locally on your phone.
DESIGNED FOR REAL PRACTICE
• Adjustable metronome and tempo, with classical tempo markings (Andante, Allegro, Presto, and more) shown as you dial in your BPM.
• A tuning calibration option for pianos that are slightly out of tune, so transcription stays accurate even on an imperfect instrument.
• A clean piano-roll editor built for quick fixes, not deep production work — select a note, nudge it, quantize a phrase, and move on.
• Light and dark modes throughout the app, so it looks right whether you're practicing under stage lights or in a dim practice room.
WHO IT'S FOR
Leopold is for pianists who want a fast way to capture an idea, a lesson, or a piece they're learning — without stopping to write it out by hand. It's for teachers who want to hand a student sheet music from what they just played. It's for composers sketching at the keyboard who want a MIDI file to build on later.
Leopold doesn't try to replace a full notation program — it's the fastest way to get from "I just played that" to a sheet music page or a MIDI file you can take somewhere else.
No account. No subscription. No ads. No data collection. Just you, your piano, and your phone.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, COLIN WILLIAM MACRIS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- COLIN WILLIAM MACRIS
- Size
- 19.2 MB
- Category
- Music
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Colin Macris
