OmniGraffle 3.8 for iOS supports the new iPad Pro and the new Apple Pencil.
With the new iPad Pro, your OmniGraffle canvas extends edge-to-edge, beautifully.
With the new Apple Pencil, you can make your graphics precise with even less effort — it’s a great companion to OmniGraffle for iOS. And you can customize the double-tap gesture: set it to switch to the previous tool or toggle the Navigation Sidebar, Inspector, or full-screen mode.
Read the release notes for more details.