BlankPage app for iOS and Android provides Pencil Drawing Filter.

BetaRunner has been released in Android Playstore.

https://play.google.com/store/apps/details?id=com.softelf.alpharun

DCMetroGo new version app is going to be released.

* silver line has been updated.

* hardware acceleration is used for drawing.

https://play.google.com/store/apps/details?id=com.softelf.dcmetrogo2