Write, play and share music, anywhere!
Flat is the sheet music app trusted by 5M+ musicians worldwide. Compose, notate, and collaborate on scores for any instrument, from guitar tabs to full orchestras, across iPhone, iPad, Mac, and your web browser.
Free features include:
→ Quick notation input via touch piano, guitar fretboard, or drum pads
→ 90+ instruments including piano, guitar, violin, saxophone, drums, voice, and more
→ 100K+ original scores in the community
→ Edit music scores on iPhone, iPad, Mac, and in your web browser
→ Hundreds of notation symbols: articulations, dynamics, measures, text, and more
→ Autocompletion when adding chords
→ Transposition by key, interval, or tone
→ Import MusicXML and MIDI files
→ Import PDF sheet music and convert it into fully editable scores
→ Keyboard shortcuts for iPad keyboard and fretboard
→ Share scores publicly or privately
Collaborate in real-time:
→ Real-time collaboration for a dynamic experience
→ Inline comments for live feedback
→ Find collaborators in the Flat community
Share your music:
→ Join the monthly Flat community challenge and win prizes
→ Explore hundreds of thousands of original scores from composers worldwide
→ Get featured and connect with fellow musicians
Subscribe to Flat Power to unlock the full experience across all your devices. Flat Power, premium features:
→ Unlimited cloud storage
→ Automatic sync so your full library stays connected on iPhone, iPad, Mac, and web browser
→ 180+ instruments including high-quality audio
→ Advanced export: individual parts, multi-rest print, remove Flat branding
→ Layout and styles: page dimensions, spacing, chord style, Jazz and Handwritten fonts
→ Custom note heads: Boomwhackers colors, Note Names, Shape-Note (Aiken)
→ Version history: view and revert to any past version of your scores
→ Advanced audio: per-part volume and reverb controls
→ Input notes with MIDI devices (USB and Bluetooth)
→ Autosave with full version history
→ Customizable keyboard shortcuts
→ Priority support
→ PDF and photo import pages included with every plan:
- Monthly plan: 10 PDF import pages/month + full premium features
- Yearly plan: 20 PDF import pages/month + full premium features (best value)
- Lifetime plan: full premium features + 20 PDF import pages (one-time purchase, no renewal)
Terms for in-app payments: Payment will be charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the period. Manage and cancel subscriptions in your App Store account settings. Any unused portion of a free trial, if offered, will be forfeited when a subscription is purchased.
Our Terms of Service and Privacy Policy: https://flat.io/help/en/policies
Questions or feedback: ios@flat.io
This app is genuinely amazing. I started composing music on this app and thought it was great. Upon subscribing to the premium features, the capabilities blew my mind. I’ve now started writing original piece for my orchestra class at school. The interface is clean and easy-to-use, and the intuitiveness is seriously impressive. One thing I must note is that the sound quality could use a bit of work and tweaking and some of the instrument sounds could be more realistic when compared to other notation apps like MuseScore or Dorico. Furthermore, on older iPad models, this app can lag and be slow (annoying when you’re composing or even listening to a large piece of music with a ton of parts) and is really irritating and I hope this can get fixed. I feel like some other features found on the computer version should be transferred to iOS, such as the ability to change and customize the font found on the text, not just the music. Also, please add the following (if you can, hopefully easy to program!): Arpeggio down (piano pieces mostly), tremolo between two notes, nested tuplets accessibility, and, finally, please make stuff like dynamics, crescendos, and ritardandos more obvious or audible, since a lot of it sounds the same.Overall, great app and I almost always recommend it to friends and other composers. Thank you.
Developer Response
Thank you so much for your fantastic review, OceanhornPro! Your enthusiasm for the app is truly appreciated! It’s wonderful to hear how much you enjoy composing and that the premium features have enhanced your experience. We’re glad you find the interface clean and user-friendly. Your feedback on sound quality and usability on older devices is invaluable, and we’re always looking for ways to improve. It’s great to know that you’re recommending the app to friends, as it helps us grow our community! If you have any specific concerns or suggestions, please feel free to reach out to support at hello@flat.io. We’re here to help!
Great app and notation software, but....
DaniTheBoo
I’ve been using this app for probably around two years now (the free version up until last week). It works great for arranging simple harmonies or accompaniment, but is seriously lacking for someone who has to consistently arrange and transcribe orchestral music. Specifically, in my own experience, the audio playback is VERY laggy (and sometimes a half or full beat off in instruments but not others) when there’s more than 5 or so instruments and I have to restart the app every time I add an instrument because the sound doesn’t play for that particular instrument (even if the volume control is up). Also, the touchscreen aspect of it sometimes doesn’t work for selecting measures or moving articulations (slurs, for example, and no amount of zooming into the measure helps). It’s manageable, and could honestly be a lot worse, but it does get frustrating when you’ve got a stroke of brilliance in adding a part but can’t hear it or it takes you 9 tries to make a slur more than two notes long. I hate being the person that just leaves negative comments, because seriously aside from the things mentioned above, this app is great. I love all the different functionalities (like writing in concert pitch!) and the ability to add different articulations. It’s been a life saver for a lot of my classes. There are some other suggestions I’ve thought of in the past, like instruments to add (wood/temple blocks!!) but I can’t remember all of those suggestions at this point in time. It really is a wonderful app, especially for those just getting into composition or arranging, and I’ve already highly recommended it to my classmates. I think just a few bug fixes and additions to make the app more user-friendly (and musician-friendly) would be spectacular! Thank you!
Developer Response
We appreciate your detailed feedback on the app's performance and features. It’s fantastic to hear you find it beneficial for your classes, and we value your suggestions for improvement. Your insights help us enhance the experience for all users! Thank you for your support!
Good for most people
Itsa-Me 26
This app is great for if you just want to write something out quick. Obviously the phone isn't going to be most ideal method of composing music, but I feel like there are a few things here and there that could use some tweaking. Particularly with the guitar interface. I know I'm probably a minority when it comes to this, but I would like to use this so I can transcribe songs accurately, most of them being rock/metal songs, which are sometimes in different guitar/bass tunings like D standard, Eb standard or drop C, and while you can write in lower notes than what's accessible with standard E, it won't show up on the tablature, which, if you're someone who uses tablature primarily, can be a little inconvenient. So lower tunings for guitars/basses I think would be a welcome addition. Also, many of the guitar techniques that you can write out on the app won't happen during playback. For example, palm muting doesn't change the guitar sound, it just says that the notes are palm muted, bends and pre bends sometimes won't even appear in the music even after repeated attempts to add them in, and even when they do get added in, the notes will not bend during playback. Letting notes ring also doesn't do anything during playback, it just says to let the notes ring. Otherwise I'd say this is going to be fine for everyone else, which is why I gave it a 4 star rating even if I personally had some problems with it.
Developer Response
We appreciate your thoughtful feedback and are glad you find the app useful for quick compositions. Your insights about the guitar interface and specific techniques are valuable, and we're here for any detailed concerns you wish to share. Thank you for your support!
5 years of Use
TrueAceOfSpades
This app is very intuitive, and easy to initially understand. I have a love/hate relationship with this App, and I really cannot explain it. On one hand, the Community Features are pretty fantastic. I really like how easy it is to pick up, and how the app is completely free, but with a subscription that can be avoided like I have done. A few problems I have with it however I will note down; 1. The Interface is really buggy. This app needs a lot more testing, and I would Honestly be super pumped about the bugs being fixed. 2. The Instrument Quality is Extremely Poor. I love using Saxophones, and other instruments, but their Quality is Very Low, and I really hate using anything but Pianos for that reason. 3. The Premium Subscription costs a little bit too much. I am aware that there are a lot of special offers/discounts often, but 200$ for a lifetime is a bit much. 10$ a month is also a lot. Reducing the Price and Dropping the Discount effectiveness would be the right call in my book. Maybe a free trial would also be helpful? Honestly I love using this app, and have considered purchasing the Subscription a few times, but the price is what sets me back. Thanks for creating a nice community, and making this app free for everyone! Keep making awesome improvements! Good Day!Edit: As of May 2026, the app is extremely buggy. I do not know what was changed, but it does not play half the time
Developer Response
Hello squishy177! It's fantastic to hear that you've been using the app for five years and enjoy the community features! We truly value your insights about the interface and instrument quality. Your feedback regarding the bugs is essential, and we're grateful you brought this to our attention. We also understand your concerns about the subscription pricing. Thank you for sharing your thoughts on potential improvements, including a free trial. Your passion for the app shines through, and we appreciate your support and suggestions. We're committed to enhancing the experience for all users!
Bug fixes and improvements.
Version 26.07.01
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 .
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