FiftyThree, the developers behind the popular drawing app Paper, today announced it’s releasing an SDK that will let all developers take advantage of its Pencil stylus for iOS devices. First launched last year alongside an update to Paper, Pencil is a $60 Bluetooth stylus for the drawing app that aims to offer a realistic pencil-to-paper drawing experience.

The SDK will allow for a smooth experience with the Pencil stylus in other apps and that also means in some cases FiftyThree will be working to improve the apps of its direct competitors while hopefully selling its stylus as a platform in the process. Devs will get access to palm rejection, erase, easy pairing, and all the pencil and touch classifiers the company uses in the Paper app. Support for surface pressure is also arriving with iOS 8: expand full story