I have used this for about 3+ years now, and this really is a Great app, if not the Best, suitable for the more serious scorer / composer. Learn about the iPhone-only app: bit.ly/symphonyiphone.
* Previously paid, but now free upgrade in Version 5
Starting Version 5, Symphony Pro now offers handwriting recognition as the only in-app purchase: Perfect with Apple Pencil, and works great with touch or capacitive stylus It allows you to compose music for just about any size ensemble, from piano, symphonies, band, lead sheets, chord charts, guitar tabs, and more. Symphony Pro 6 is a complete and intuitive app for writing music notation on iPad.