This has been requested in different places, including the facebook user group, and on this forum, where the devs said it’s on the roadmap:
Just creating this topic to emphasize support, and so that other people who’d like this can upvote in one place
Note that this is not about handwriting recognition, as in StaffPad, but rather simply clicking the note on a staff, with a preview of the pitch on hover – just as it works with the mouse on desktop, or with the pen in the Sibelius for iPad app.
(Currently you can only input pitches via the on-screen keyboard, or by connecting an external keyboard to the iPad).
And I would like to add the implementation of the gyro sensor of the new Apple Pencil. You could make it assignable or fixed to change note value. Or the possibility to open a context menu by pressing it… it could become such an killer app.