Hi all—there is now an official Dark Heresy Character App/Digital Character Sheet!
http://licensing.games-workshop.com/tag/dark-heresy-character-app/
More screen shots are on the developer site here: http://www.dizelabs.com/
It's on iTunes now here for IOS (Android coming soon): https://itunes.apple.com/us/app/dark-heresy-digital-character/id989584208?mt=8
–Tim