Flat: Sheet Music Editor
Cloud Notation: Compose & Sync
Only for Mac
Free · In‑App Purchases
Mac
Your sheet music, everywhere. One Flat Power subscription covers Mac, iPhone, iPad, and the web, with cloud sync, real-time collaboration, and HQ instruments.
Flat is a professional music notation app for composers, arrangers, and band directors. Write, edit, and play back scores for any instrumentation (orchestral, chamber, choral, jazz, marching band, or mixed ensemble) on your Mac, and keep your full library in sync across your desktop, browser, and mobile devices.
COMPOSE ON YOUR DEVICE. SYNC WITH FLAT POWER.
Write and edit your scores locally, save them to your device, and export when you're ready. With Flat Power (premium), your scores automatically sync so your full library stays connected across all your devices. You can use your subscription with your Flat account on your iPhone, iPad and your web browser.
BETTER AUDIO PLAYBACK ON DESKTOP
The Mac app includes higher-quality soundfonts for free instruments, so playback sounds closer to a real ensemble compared to the browser version. Flat Power subscribers can go further with premium instrument libraries and per-part volume and reverb controls.
NOTATION FEATURES
Flat covers everything you need to go from a blank page to a finished, print-ready score:
- Note input via mouse, keyboard, touch piano, guitar fretboard, or drum pads
- A wide range of instruments including piano, guitar, strings, winds, brass, percussion, and voice
- Full articulation, dynamics, and expression markings
- Transposing score and individual parts view
- Chord diagrams, guitar tabs, and drum notation
- Lyrics and text annotations
- Autocompletion when adding chords
- Transposition by key, interval, or semitone
- MIDI input via USB and Bluetooth devices
- Import MusicXML, MIDI, and PDF files
- Export in PDF, MP3, and WAV
FREE VERSION
Full desktop notation app included at no cost. No account required, all your data stays on your device. All core notation features listed above are included in our free version.
FLAT POWER: $9.99/month or $49.99/year
Unlock advanced tools, collaboration, and seamless sync across all your devices.
Flat Power includes everything in the free plan, plus:
- Store and sync your scores in your Flat Cloud account across desktop, browser, and mobile
- Full version history: view and restore any previous version of your score
- Export in MusicXML, MIDI, and PDF without Flat branding
- Real-time collaboration with other Flat users
- Inline comments for feedback on shared scores
- Custom note heads: Boomwhackers colors, Note Names, Shape-Note (Aiken)
- Advanced notation: customizable beaming patterns, swing, multi-measure rest, figured bass, and more.
- Customizable keyboard shortcuts
- 180+ instruments including the full HQ instrument library
- Premium soundfonts and instrument add-ons
- Advanced export: individual parts, automatic multi-rest print, no Flat branding
- Layout and style controls: page dimensions, Jazz and Handwritten fonts, element spacing
- Advanced audio settings
- Priority Support
No account required to get started. Sign in with your Flat Power account to sync your library. Existing Flat Power subscribers get desktop access included at no extra cost.
Payment for Flat Power will be charged to your Apple ID at confirmation of purchase. Subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage your subscription in App Store account settings.
Our Terms of Service and Privacy Policy are available at https://help.flat.io/en/policies/
Questions or feedback: hello@flat.io
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Thanks for using Flat! This release includes bug fixes, stability improvements, and small refinements across the app.
The developer, Tutteo Limited, 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 Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tutteo Limited
- Size
- 168.3 MB
- Category
- Music
- Compatibility
Requires macOS 12.0 or later.
- Mac
Requires macOS 12.0 or later.
- Mac
- Languages
English and 22 more
- English, Danish, Dutch, Filipino, Finnish, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Flat Power (Monthly) $9.99
- Flat Power (Yearly) $49.99
- Copyright
- © 2026 Tutteo Ltd.