SeeScore 2 is the perfect companion to PlayScore 2, and from the same makers. SeeScore is an iPhone/iPad ‘sheet music reader’ app, but because it understands MusicXML it combines some of the features of a notation editor:
If you have the SeeScore app you will see Copy to SeeScore as an option when you share a MusicXML file. SeeScore can create a fresh score from your scanned music; it can even create parts, and you can use Airturn devices to turn the pages. Find SeeScore in the App Store.