iOS App Development with MusicXML?

 Hello,

I am a violinist/fiddler and software developer interested in creating iOS
apps that read and create chord charts and music notation. The baseline of
features that I’m looking to implement would be a custom view to display
and edit written out music (ranging from a few beats without bar lines to
whole pages) as well as the ability to export out to PDF and XML files that
can be imported into other music apps. I’ve been reading through MusicXML
and feel like it will suit my needs but have mostly just familiarized
myself with the XML tags and their mappings to music symbols.

I’m looking for advice on where I could start with rendering music to a
view and into a PDF. As MusicXML is used in so many public products, I was
hoping there might be some libraries, open-source code, tutorials, or
documentation that I could use as a jumping off point. In particular, I’m
interested in any materials specific to iOS development since there are
fewer built-in libraries that support functionality like XML parsing and
writing. I’m currently looking at OpenSheetMusicDisplay
<https://opensheetmusicdisplay.github.io/classdoc/> and VexFlow
<https://www.vexflow.com/> and rendering to a WebView, but I’m working in
SwiftUI and would prefer writing a renderer from scratch. I’m also open to
looking into other notation formats such as MNX if it would provide
compatibility with other composition software (Sibelius, Finale, etc.).

Any leads you can provide would be greatly appreciated. Thank you!

Sincerely,
Joyce