Thanks
I'm the creator of this app and would jut like to thank the El Reg team for a cracking review. I would like to add that the app is now universal so it supports iPad too and the faces have a bit more gore added to them.
Some promo codes are:
M396HHJMTNAY
W6YH7MJP9M6M
6H6YMFJXX7FJ
WPRRP4YTHKTK
WT3EKWHF7TNT