Zombie Me Lite is the free version of a yet another photo manipulation app for goofing around with the pics on your Iphone/Itouch. Interface is easy to learn and use. Unlike free versions of many similar apps, you can save your altered pics back to your device. I could imagine this to be an especially fun app to use at Halloween for making fun attachments for emails.
I decided to try it on a profile pic I came across on Grindr (profile comments added with free app Puri Lite):