With Cornelius Composer, teachers and students can easily compose music without complex and difficult-to-use special software. The compositions can be created on a computer, tablet or mobile phone.

If you are a school or a teacher looking to buy in bulk (volume purchase), please search the store for "Cornelius Composer for Schools" instead. The version you are looking at right now unlocks via an in-app purchase and so does not support volume purchase.

Please note:
(!) In the app trial you can only create/edit up to 2 music scores. Additionally, the export formats are limited. You can unlock the complete version inside the app.
(!) The music sheets currently don't support multiple staves! That feature planned for the future.

Pupils unfold their musical creativity without hindrance and at the same time are carefully and didactically introduced to the topic of music composition. The coloured notation can be conveniently changed at any time and adapted to the most diverse instrument sets.

Compositions can be exported at any time for further processing in other notation software or for printing in PDF format. You can also import existing sheets in MusicXML format.


• Import scores (MusicXML and MIDI).
• Export scores (MusicXML, MIDI, and PDF) (only PDF in the trial).
• If you zoom in, the music notes will be transformed into animated creatures.
• Melodic and rhythmic sheet view.
• Customizable colourful music notes.
• Playback using Solfège-voices (do, re, mi) or instruments.
• Sheet editing while reproducing (loop while you edit!).
• Available in English, Portuguese and German.
• Part of the World of Music series.

What’s New

Version 1.21.00

Trial now allows saving/editing/importing up to 2 music scores without restrictions. Exporting as PDF is also possible now.
MusicXML imports now recognize many more BPM formats.
Many small improvements in MusicXML importing/exporting.
Several visual improvements for checkboxes, scrollbars, etc.
Changing time signature from clicking the time signature element now changes all measures until the next time signature change (or the end of score).
Moving a note up or down with the cursor now also moves any notes tied to that note.
Hid uncommon instruments by default in the instruments choice screen.
Improved design of checkboxes and scrollbars.
Changed playing of score to play to the end even if there are multiple notes selected (unless looped).
Made score project selection mode be more obvious by highlighting the scores slightly.
Many other improvements.

Fixed key signature "transpose notes" not working for notes outside of first changed measure.
Fixed several bugs involving ties and multiple notes of the same pitch in chords.
Fixed extremely small notes being created in some situations due to a number rounding error.
Fixed music sheet sometimes “shifting” around when playing while zoomed out.
Fixed notes not updating after changing their colors in the options menu.
Fixed not being able to import XML files in iOS 13.
Many other fixes.

Ratings and Reviews

3.7 out of 5
3 Ratings

3 Ratings

Magic Keys ,

Beautiful app

Just from using the free version it is a beautiful app. Pretty self explanatory. Fairly easy to use. Looking forward to owning the full version. Seems a little pricey but could very well be worth it.

Developer Response ,

Hello Magic Keys, thank you so much! We are dedicated to create the best educational experiences in this world... full of music! :D Please notice that it is a full version, so it will be yours, as long as you use/have your account. Plus any update, the next will be huge, is for free and our team is working hard on it ;) Please feel free to write us and we send you a temporary license, so that you can try it better. Kind regards


classplash GmbH
137.2 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Full App Unlock $26.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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