The PencilKit was introduced during the WWDC 2019 as a way for developers to bring the Apple Pencil experience to their apps. The new framework gives devs the power to bring the same low-latency tech, “markup anywhere” and tool palette features that Apple uses as their own.
In iOS 13, PencilKit gives users the ability to write down notes or draw in Notes, for document marking in Pages and annotating PDFs and screenshots. The API has 3 codes that developers can harness to get the same tool palette, UI and low latency Pencil has, including the drop in milliseconds response time for the iPadOS.
Before PencilKit, developers were usually on their own when it comes to building app features, but the release of the API now gives devs a chance to implement annotation and drawing features similar to Apple Pencil in iOS 13. Moreover, devs can gain access to dynamic tool picker with lasso, eraser, pencil, marker and pen tools used in Pages and Notes apps.
Developers can visit Apple’s website for more information on the PencilKit API.